diff --git a/docs/data/migration/migration-data-grid-v8/migration-data-grid-v8.md b/docs/data/migration/migration-data-grid-v8/migration-data-grid-v8.md
new file mode 100644
index 0000000000000..ee5abefa5537b
--- /dev/null
+++ b/docs/data/migration/migration-data-grid-v8/migration-data-grid-v8.md
@@ -0,0 +1,56 @@
+---
+title: Data Grid - Migration from v8 to v9
+productId: x-data-grid
+---
+
+# Migration from v8 to v9
+
+<p class="description">This guide describes the changes needed to migrate the Data Grid from v8 to v9.</p>
+
+## Introduction
+
+This is a reference guide for upgrading `@mui/x-data-grid` from v8 to v9.
+
+:::success
+This guide is also available in <a href="https://raw.githubusercontent.com/mui/mui-x/refs/heads/master/docs/data/migration/migration-data-grid-v8/migration-data-grid-v8.md" target="_blank">Markdown format</a> to be referenced by AI tools like Copilot or Cursor to help you with the migration.
+:::
+
+## Start using the new release
+
+In `package.json`, change the version of the Data Grid package to `next`.
+
+```diff
+-"@mui/x-data-grid": "^8.x.x",
++"@mui/x-data-grid": "next",
+
+-"@mui/x-data-grid-pro": "^8.x.x",
++"@mui/x-data-grid-pro": "next",
+
+-"@mui/x-data-grid-premium": "^8.x.x",
++"@mui/x-data-grid-premium": "next",
+```
+
+## Breaking changes
+
+### Behavioral changes
+
+- Pagination numbers are formatted by default.
+
+  To disable the pagination formatting, provide the key and value to `localeText` prop:
+
+  ```diff
+   <DataGrid
+  +  localeText={{
+  +    paginationDisplayedRows: ({ from, to, count, estimated }) => {
+  +      if (!estimated) {
+  +        return `${from}–${to} of ${count !== -1 ? count : `more than ${to}`}`;
+  +      }
+  +      const estimatedLabel =
+  +        estimated && estimated > to
+  +          ? `around ${estimated}`
+  +          : `more than ${to}`;
+  +      return `${from}–${to} of ${count !== -1 ? count : estimatedLabel}`;
+  +    }
+  +  }}
+   />
+  ```
diff --git a/docs/data/pages.ts b/docs/data/pages.ts
index 602cc616985af..40eaccdc497af 100644
--- a/docs/data/pages.ts
+++ b/docs/data/pages.ts
@@ -832,7 +832,7 @@ const pages: MuiPage[] = [
         pathname: '/x/migration-v9',
         subheader: 'Upgrade to v9',
         children: [
-          // { pathname: '/x/migration/migration-data-grid-v8', title: 'Breaking changes: Data Grid' },
+          { pathname: '/x/migration/migration-data-grid-v8', title: 'Breaking changes: Data Grid' },
           // {
           //   pathname: '/x/migration/migration-pickers-v8',
           //   title: 'Breaking changes: Date and Time Pickers',
diff --git a/docs/pages/x/migration/migration-data-grid-v8.js b/docs/pages/x/migration/migration-data-grid-v8.js
new file mode 100644
index 0000000000000..1bf87ea719137
--- /dev/null
+++ b/docs/pages/x/migration/migration-data-grid-v8.js
@@ -0,0 +1,6 @@
+import MarkdownDocs from 'docs/src/modules/components/MarkdownDocs';
+import * as pageProps from 'docsx/data/migration/migration-data-grid-v8/migration-data-grid-v8.md?muiMarkdown';
+
+export default function Page() {
+  return <MarkdownDocs {...pageProps} />;
+}
diff --git a/packages/x-data-grid/src/constants/localeTextConstants.ts b/packages/x-data-grid/src/constants/localeTextConstants.ts
index 22df9fddc7c8b..2adb3fb919699 100644
--- a/packages/x-data-grid/src/constants/localeTextConstants.ts
+++ b/packages/x-data-grid/src/constants/localeTextConstants.ts
@@ -1,4 +1,7 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
+import { buildLocaleFormat } from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('en-US');
 
 export const GRID_DEFAULT_LOCALE_TEXT: GridLocaleText = {
   // Root
@@ -198,10 +201,13 @@ export const GRID_DEFAULT_LOCALE_TEXT: GridLocaleText = {
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     const unknownRowCount = count == null || count === -1;
     if (!estimated) {
-      return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-    return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `around ${formatNumber(estimated)}`
+        : `more than ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/arSD.ts b/packages/x-data-grid/src/locales/arSD.ts
index 13260775fe6aa..9061a1b5d9ae1 100644
--- a/packages/x-data-grid/src/locales/arSD.ts
+++ b/packages/x-data-grid/src/locales/arSD.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('ar-SD');
 
 const arSDGrid: Partial<GridLocaleText> = {
   // Root
@@ -196,10 +202,13 @@ const arSDGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'عدد الصفوف في الصفحة:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `\u200E${to}-${from}\u200E من ${count !== -1 ? count : `أكثر من ${to}`}`;
+      return `\u200E${formatNumber(to)}-${formatNumber(from)}\u200E من ${count !== -1 ? formatNumber(count) : `أكثر من ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `حوالي ${estimated}` : `أكثر من ${to}`;
-    return `\u200E${to}-${from}\u200E من ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `حوالي ${formatNumber(estimated)}`
+        : `أكثر من ${formatNumber(to)}`;
+    return `\u200E${formatNumber(to)}-${formatNumber(from)}\u200E من ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/beBY.ts b/packages/x-data-grid/src/locales/beBY.ts
index 044ce8e0a2ed5..fc08435acb078 100644
--- a/packages/x-data-grid/src/locales/beBY.ts
+++ b/packages/x-data-grid/src/locales/beBY.ts
@@ -233,10 +233,10 @@ const beBYGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/bgBG.ts b/packages/x-data-grid/src/locales/bgBG.ts
index 704b5c8e2ddfc..1c406b7dcb885 100644
--- a/packages/x-data-grid/src/locales/bgBG.ts
+++ b/packages/x-data-grid/src/locales/bgBG.ts
@@ -202,10 +202,10 @@ const bgBGGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/bnBD.ts b/packages/x-data-grid/src/locales/bnBD.ts
index 0d2d287ad2a32..a2a9012b96411 100644
--- a/packages/x-data-grid/src/locales/bnBD.ts
+++ b/packages/x-data-grid/src/locales/bnBD.ts
@@ -204,10 +204,10 @@ const bnBDGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/caES.ts b/packages/x-data-grid/src/locales/caES.ts
index f1c7cb481d9c0..a85c9015ec460 100644
--- a/packages/x-data-grid/src/locales/caES.ts
+++ b/packages/x-data-grid/src/locales/caES.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('ca-ES');
 
 const caESGrid: Partial<GridLocaleText> = {
   // Root
@@ -198,11 +204,13 @@ const caESGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Files per pàgina:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} de ${count !== -1 ? count : `més de ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : `més de ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `al voltant de ${estimated}` : `més de ${to}`;
-    return `${from}–${to} de ${count !== -1 ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `al voltant de ${formatNumber(estimated)}`
+        : `més de ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/csCZ.ts b/packages/x-data-grid/src/locales/csCZ.ts
index 29e23dac2132a..27244823dbb62 100644
--- a/packages/x-data-grid/src/locales/csCZ.ts
+++ b/packages/x-data-grid/src/locales/csCZ.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('cs-CZ');
 
 const csCZGrid: Partial<GridLocaleText> = {
   // Root
@@ -224,11 +230,13 @@ const csCZGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Řádků na stránce:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} z ${count !== -1 ? count : `více než ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} z ${count !== -1 ? formatNumber(count) : `více než ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `přibližně ${estimated}` : `více než ${to}`;
-    return `${from}–${to} z ${count !== -1 ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `přibližně ${formatNumber(estimated)}`
+        : `více než ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} z ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/daDK.ts b/packages/x-data-grid/src/locales/daDK.ts
index 14d5d4267cd1f..ea9981ad6fc6c 100644
--- a/packages/x-data-grid/src/locales/daDK.ts
+++ b/packages/x-data-grid/src/locales/daDK.ts
@@ -202,10 +202,10 @@ const daDKGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/deDE.ts b/packages/x-data-grid/src/locales/deDE.ts
index e5648fdcf2200..18848a9b5ffaa 100644
--- a/packages/x-data-grid/src/locales/deDE.ts
+++ b/packages/x-data-grid/src/locales/deDE.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('de-DE');
 
 const deDEGrid: Partial<GridLocaleText> = {
   // Root
@@ -199,10 +205,13 @@ const deDEGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Zeilen pro Seite:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} von ${count !== -1 ? count : `mehr als ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} von ${count !== -1 ? formatNumber(count) : `mehr als ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `ungefähr ${estimated}` : `mehr als ${to}`;
-    return `${from}–${to} von ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `ungefähr ${formatNumber(estimated)}`
+        : `mehr als ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} von ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/elGR.ts b/packages/x-data-grid/src/locales/elGR.ts
index cc4d6132731e3..2224800da1a6e 100644
--- a/packages/x-data-grid/src/locales/elGR.ts
+++ b/packages/x-data-grid/src/locales/elGR.ts
@@ -204,10 +204,10 @@ const elGRGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/esES.ts b/packages/x-data-grid/src/locales/esES.ts
index 240e53bd200c4..c40b4a7c2b16b 100644
--- a/packages/x-data-grid/src/locales/esES.ts
+++ b/packages/x-data-grid/src/locales/esES.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('es-ES');
 
 const esESGrid: Partial<GridLocaleText> = {
   // Root
@@ -198,11 +204,13 @@ const esESGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Filas por página:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} de ${count !== -1 ? count : `más de ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : `más de ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `alrededor de ${estimated}` : `más de ${to}`;
-    return `${from}–${to} de ${count !== -1 ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `alrededor de ${formatNumber(estimated)}`
+        : `más de ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/faIR.ts b/packages/x-data-grid/src/locales/faIR.ts
index 8d8e251650f32..90ca2cd919e63 100644
--- a/packages/x-data-grid/src/locales/faIR.ts
+++ b/packages/x-data-grid/src/locales/faIR.ts
@@ -204,10 +204,10 @@ const faIRGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/fiFI.ts b/packages/x-data-grid/src/locales/fiFI.ts
index ec52dab906143..75a0bbaf2daec 100644
--- a/packages/x-data-grid/src/locales/fiFI.ts
+++ b/packages/x-data-grid/src/locales/fiFI.ts
@@ -204,10 +204,10 @@ const fiFIGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/frFR.ts b/packages/x-data-grid/src/locales/frFR.ts
index 6694890167ace..7824119109203 100644
--- a/packages/x-data-grid/src/locales/frFR.ts
+++ b/packages/x-data-grid/src/locales/frFR.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('fr-FR');
 
 const frFRGrid: Partial<GridLocaleText> = {
   // Root
@@ -198,10 +204,13 @@ const frFRGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Lignes par page :',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} sur ${count !== -1 ? count : `plus de ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} sur ${count !== -1 ? formatNumber(count) : `plus de ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `environ ${estimated}` : `plus de ${to}`;
-    return `${from}–${to} sur ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `environ ${formatNumber(estimated)}`
+        : `plus de ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} sur ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/heIL.ts b/packages/x-data-grid/src/locales/heIL.ts
index 0fdb0dab4889c..78eacbaff4414 100644
--- a/packages/x-data-grid/src/locales/heIL.ts
+++ b/packages/x-data-grid/src/locales/heIL.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('he-IL');
 
 const heILGrid: Partial<GridLocaleText> = {
   // Root
@@ -196,10 +202,11 @@ const heILGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'שורות בעמוד:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}-${to} מתוך ${count !== -1 ? count : `יותר מ־${to}`}`;
+      return `${formatNumber(from)}-${formatNumber(to)} מתוך ${count !== -1 ? formatNumber(count) : `יותר מ־${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `כ־${estimated}` : `יותר מ־${to}`;
-    return `${from}-${to} מתוך ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to ? `כ־${formatNumber(estimated)}` : `יותר מ־${formatNumber(to)}`;
+    return `${formatNumber(from)}-${formatNumber(to)} מתוך ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/hrHR.ts b/packages/x-data-grid/src/locales/hrHR.ts
index fb43657cde723..d0c387413c441 100644
--- a/packages/x-data-grid/src/locales/hrHR.ts
+++ b/packages/x-data-grid/src/locales/hrHR.ts
@@ -1,5 +1,7 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization } from '../utils/getGridLocalization';
+import { getGridLocalization, buildLocaleFormat } from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('hr-HR');
 
 const hrHRGrid: Partial<GridLocaleText> = {
   // Root
@@ -217,10 +219,13 @@ const hrHRGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Redova po stranici:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} od ${count !== -1 ? count : `više nego ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} od ${count !== -1 ? formatNumber(count) : `više nego ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `oko ${estimated}` : `više nego ${to}`;
-    return `${from}–${to} od ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `oko ${formatNumber(estimated)}`
+        : `više nego ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} od ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/huHU.ts b/packages/x-data-grid/src/locales/huHU.ts
index 1bf71eb5dcbf9..99c2eb6ada21c 100644
--- a/packages/x-data-grid/src/locales/huHU.ts
+++ b/packages/x-data-grid/src/locales/huHU.ts
@@ -199,10 +199,10 @@ const huHUGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/hyAM.ts b/packages/x-data-grid/src/locales/hyAM.ts
index d7d8b9dbd68d9..faa876e7be793 100644
--- a/packages/x-data-grid/src/locales/hyAM.ts
+++ b/packages/x-data-grid/src/locales/hyAM.ts
@@ -222,10 +222,10 @@ const hyAMGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   // paginationItemAriaLabel: type => {
   //   if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/idID.ts b/packages/x-data-grid/src/locales/idID.ts
index 6d92efed4bc24..da35e82be8a01 100644
--- a/packages/x-data-grid/src/locales/idID.ts
+++ b/packages/x-data-grid/src/locales/idID.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('id-ID');
 
 export const idIDGrid: Partial<GridLocaleText> = {
   // Root
@@ -193,11 +199,13 @@ export const idIDGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Baris per halaman:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} dari ${count !== -1 ? count : `lebih dari ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} dari ${count !== -1 ? formatNumber(count) : `lebih dari ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `sekitar ${estimated}` : `lebih dari ${to}`;
-    return `${from}–${to} dari ${count !== -1 ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `sekitar ${formatNumber(estimated)}`
+        : `lebih dari ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} dari ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/isIS.ts b/packages/x-data-grid/src/locales/isIS.ts
index 1ad5043047b41..49b78bbba065f 100644
--- a/packages/x-data-grid/src/locales/isIS.ts
+++ b/packages/x-data-grid/src/locales/isIS.ts
@@ -202,10 +202,10 @@ const isISGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/itIT.ts b/packages/x-data-grid/src/locales/itIT.ts
index 942cd33c61e3a..00476736cbfaf 100644
--- a/packages/x-data-grid/src/locales/itIT.ts
+++ b/packages/x-data-grid/src/locales/itIT.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('it-IT');
 
 const itITGrid: Partial<GridLocaleText> = {
   // Root
@@ -198,10 +204,13 @@ const itITGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Righe per pagina:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} di ${count !== -1 ? count : `più di ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} di ${count !== -1 ? formatNumber(count) : `più di ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `circa ${estimated}` : `più di ${to}`;
-    return `${from}–${to} di ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `circa ${formatNumber(estimated)}`
+        : `più di ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} di ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/jaJP.ts b/packages/x-data-grid/src/locales/jaJP.ts
index e686dbc959f9d..ccae308fdc31f 100644
--- a/packages/x-data-grid/src/locales/jaJP.ts
+++ b/packages/x-data-grid/src/locales/jaJP.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('ja-JP');
 
 const jaJPGrid: Partial<GridLocaleText> = {
   // Root
@@ -193,10 +199,11 @@ const jaJPGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'ページあたりの行数:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} of ${count !== -1 ? count : `${to}以上`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} of ${count !== -1 ? formatNumber(count) : `${formatNumber(to)}以上`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `${estimated}前後` : `${to}以上`;
-    return `${from}–${to} of ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to ? `${formatNumber(estimated)}前後` : `${formatNumber(to)}以上`;
+    return `${formatNumber(from)}–${formatNumber(to)} of ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/koKR.ts b/packages/x-data-grid/src/locales/koKR.ts
index b55046eece111..6bdb9de111e15 100644
--- a/packages/x-data-grid/src/locales/koKR.ts
+++ b/packages/x-data-grid/src/locales/koKR.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('ko-KR');
 
 const koKRGrid: Partial<GridLocaleText> = {
   // Root
@@ -193,10 +199,11 @@ const koKRGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: '페이지 당 행:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} of ${count !== -1 ? count : `${to} 이상`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} of ${count !== -1 ? formatNumber(count) : `${formatNumber(to)} 이상`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `약 ${estimated}` : `${to} 이상`;
-    return `${from}–${to} of ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to ? `약 ${formatNumber(estimated)}` : `${formatNumber(to)} 이상`;
+    return `${formatNumber(from)}–${formatNumber(to)} of ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/nbNO.ts b/packages/x-data-grid/src/locales/nbNO.ts
index 36aa787bbc054..a64b5d77f4a9e 100644
--- a/packages/x-data-grid/src/locales/nbNO.ts
+++ b/packages/x-data-grid/src/locales/nbNO.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('nb-NO');
 
 const nbNOGrid: Partial<GridLocaleText> = {
   // Root
@@ -196,10 +202,13 @@ const nbNOGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Rader per side:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} av ${count !== -1 ? count : `mer enn ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} av ${count !== -1 ? formatNumber(count) : `mer enn ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `omtrent ${estimated}` : `mer enn ${to}`;
-    return `${from}–${to} av ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `omtrent ${formatNumber(estimated)}`
+        : `mer enn ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} av ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/nlNL.ts b/packages/x-data-grid/src/locales/nlNL.ts
index 1b8e526d864b8..cf7ef8ffb3cdb 100644
--- a/packages/x-data-grid/src/locales/nlNL.ts
+++ b/packages/x-data-grid/src/locales/nlNL.ts
@@ -204,10 +204,10 @@ const nlNLGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/nnNO.ts b/packages/x-data-grid/src/locales/nnNO.ts
index 52eaf609204e6..e6417a87cf329 100644
--- a/packages/x-data-grid/src/locales/nnNO.ts
+++ b/packages/x-data-grid/src/locales/nnNO.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('nn-NO');
 
 const nnNOGrid: Partial<GridLocaleText> = {
   // Root
@@ -197,10 +203,13 @@ const nnNOGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Rader per side:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} av ${count !== -1 ? count : `flere enn ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} av ${count !== -1 ? formatNumber(count) : `flere enn ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `omtrent ${estimated}` : `flere enn ${to}`;
-    return `${from}–${to} av ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `omtrent ${formatNumber(estimated)}`
+        : `flere enn ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} av ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/plPL.ts b/packages/x-data-grid/src/locales/plPL.ts
index 6a6c1f013c3c2..39e95cf5e2586 100644
--- a/packages/x-data-grid/src/locales/plPL.ts
+++ b/packages/x-data-grid/src/locales/plPL.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('pl-PL');
 
 const plPLGrid: Partial<GridLocaleText> = {
   // Root
@@ -193,10 +199,13 @@ const plPLGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Wierszy na stronę:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} z ${count !== -1 ? count : `więcej niż ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} z ${count !== -1 ? formatNumber(count) : `więcej niż ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `około ${estimated}` : `więcej niż ${to}`;
-    return `${from}–${to} z ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `około ${formatNumber(estimated)}`
+        : `więcej niż ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} z ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/ptBR.ts b/packages/x-data-grid/src/locales/ptBR.ts
index 3947433bc7fac..8761da88f7c1e 100644
--- a/packages/x-data-grid/src/locales/ptBR.ts
+++ b/packages/x-data-grid/src/locales/ptBR.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('pt-BR');
 
 const ptBRGrid: Partial<GridLocaleText> = {
   // Root
@@ -199,10 +205,13 @@ const ptBRGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Linhas por página:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} de ${count !== -1 ? count : `mais de ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : `mais de ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `cerca de ${estimated}` : `mais de ${to}`;
-    return `${from}–${to} de ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to
+        ? `cerca de ${formatNumber(estimated)}`
+        : `mais de ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/ptPT.ts b/packages/x-data-grid/src/locales/ptPT.ts
index 3787c6985ad6f..20693ebc6d6ad 100644
--- a/packages/x-data-grid/src/locales/ptPT.ts
+++ b/packages/x-data-grid/src/locales/ptPT.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('pt-PT');
 
 const ptPTGrid: Partial<GridLocaleText> = {
   // Root
@@ -199,11 +205,13 @@ const ptPTGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Linhas por página:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} de ${count !== -1 ? count : `mais do que ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : `mais do que ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `cerca de ${estimated}` : `mais do que ${to}`;
-    return `${from}–${to} de ${count !== -1 ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `cerca de ${formatNumber(estimated)}`
+        : `mais do que ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} de ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/roRO.ts b/packages/x-data-grid/src/locales/roRO.ts
index 3c0a65eebc7d5..71844cc5c10b4 100644
--- a/packages/x-data-grid/src/locales/roRO.ts
+++ b/packages/x-data-grid/src/locales/roRO.ts
@@ -204,10 +204,10 @@ const roROGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/ruRU.ts b/packages/x-data-grid/src/locales/ruRU.ts
index 9a259f387f739..bfac1ef00df80 100644
--- a/packages/x-data-grid/src/locales/ruRU.ts
+++ b/packages/x-data-grid/src/locales/ruRU.ts
@@ -234,10 +234,10 @@ const ruRUGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/skSK.ts b/packages/x-data-grid/src/locales/skSK.ts
index c26199e1f7219..bd42968b3bb00 100644
--- a/packages/x-data-grid/src/locales/skSK.ts
+++ b/packages/x-data-grid/src/locales/skSK.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('sk-SK');
 
 const skSKGrid: Partial<GridLocaleText> = {
   // Root
@@ -224,11 +230,13 @@ const skSKGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: 'Riadkov na stránke:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} z ${count !== -1 ? count : `viac ako ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} z ${count !== -1 ? formatNumber(count) : `viac ako ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `približne ${estimated}` : `viac ako ${to}`;
-    return `${from}–${to} z ${count !== -1 ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `približne ${formatNumber(estimated)}`
+        : `viac ako ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} z ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/svSE.ts b/packages/x-data-grid/src/locales/svSE.ts
index 36616c94389c1..01ff007e5ffcc 100644
--- a/packages/x-data-grid/src/locales/svSE.ts
+++ b/packages/x-data-grid/src/locales/svSE.ts
@@ -204,10 +204,10 @@ const svSEGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/thTH.ts b/packages/x-data-grid/src/locales/thTH.ts
index 0fcc0078f20ee..9efd4d6adafa5 100644
--- a/packages/x-data-grid/src/locales/thTH.ts
+++ b/packages/x-data-grid/src/locales/thTH.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('th-TH');
 
 const thTHGrid: Partial<GridLocaleText> = {
   // Root
@@ -192,11 +198,13 @@ const thTHGrid: Partial<GridLocaleText> = {
   // Pagination
   paginationRowsPerPage: 'แถวต่อหน้า:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
+    const unknownRowCount = count == null || count === -1;
     if (!estimated) {
-      return `${from}–${to} จาก ${count !== -1 ? count : `มากกว่า ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} จาก ${!unknownRowCount ? formatNumber(count) : `มากกว่า ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated > to ? `ประมาณ ${estimated}` : `มากกว่า ${to}`;
-    return `${from}–${to} จาก ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated > to ? `ประมาณ ${formatNumber(estimated)}` : `มากกว่า ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} จาก ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/trTR.ts b/packages/x-data-grid/src/locales/trTR.ts
index b6b4d5faf1f6d..2bd58724ff829 100644
--- a/packages/x-data-grid/src/locales/trTR.ts
+++ b/packages/x-data-grid/src/locales/trTR.ts
@@ -199,10 +199,10 @@ const trTRGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/ukUA.ts b/packages/x-data-grid/src/locales/ukUA.ts
index 0f218632a4d9a..7392aadc2e9a9 100644
--- a/packages/x-data-grid/src/locales/ukUA.ts
+++ b/packages/x-data-grid/src/locales/ukUA.ts
@@ -1,5 +1,5 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import { getGridLocalization, type Localization, formatNumber } from '../utils/getGridLocalization';
 
 type PluralForm = {
   one: string;
@@ -229,11 +229,13 @@ const ukUAGrid: Partial<GridLocaleText> = {
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     const unknownRowCount = count == null || count === -1;
     if (!estimated) {
-      return `${from}–${to} з ${!unknownRowCount ? count : `більше ніж ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} з ${!unknownRowCount ? formatNumber(count) : `більше ніж ${formatNumber(to)}`}`;
     }
     const estimatedLabel =
-      estimated && estimated > to ? `близько ${estimated}` : `більше ніж ${to}`;
-    return `${from}–${to} з ${!unknownRowCount ? count : estimatedLabel}`;
+      estimated && estimated > to
+        ? `близько ${formatNumber(estimated)}`
+        : `більше ніж ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} з ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/urPK.ts b/packages/x-data-grid/src/locales/urPK.ts
index eb723167a07e5..9d92361f87bec 100644
--- a/packages/x-data-grid/src/locales/urPK.ts
+++ b/packages/x-data-grid/src/locales/urPK.ts
@@ -202,10 +202,10 @@ const urPKGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/viVN.ts b/packages/x-data-grid/src/locales/viVN.ts
index ea6300a4b311c..1262a329f99f0 100644
--- a/packages/x-data-grid/src/locales/viVN.ts
+++ b/packages/x-data-grid/src/locales/viVN.ts
@@ -202,10 +202,10 @@ const viVNGrid: Partial<GridLocaleText> = {
   // }) => {
   //   const unknownRowCount = count == null || count === -1;
   //   if (!estimated) {
-  //     return `${from}–${to} of ${!unknownRowCount ? count : `more than ${to}`}`;
+  //     return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : `more than ${formatNumber(to)}`}`;
   //   }
-  //   const estimatedLabel = estimated && estimated > to ? `around ${estimated}` : `more than ${to}`;
-  //   return `${from}–${to} of ${!unknownRowCount ? count : estimatedLabel}`;
+  //   const estimatedLabel = estimated && estimated > to ? `around ${formatNumber(estimated)}` : `more than ${formatNumber(to)}`;
+  //   return `${formatNumber(from)}–${formatNumber(to)} of ${!unknownRowCount ? formatNumber(count) : estimatedLabel}`;
   // },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/zhCN.ts b/packages/x-data-grid/src/locales/zhCN.ts
index c9d399b6e2dd2..811f3d49305a3 100644
--- a/packages/x-data-grid/src/locales/zhCN.ts
+++ b/packages/x-data-grid/src/locales/zhCN.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('zh-CN');
 
 const zhCNGrid: Partial<GridLocaleText> = {
   // Root
@@ -194,10 +200,11 @@ const zhCNGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: '每页行数:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} 共 ${count !== -1 ? count : `超过 ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} 共 ${count !== -1 ? formatNumber(count) : `超过 ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `约 ${estimated}` : `超过 ${to}`;
-    return `${from}–${to} 共 ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to ? `约 ${formatNumber(estimated)}` : `超过 ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} 共 ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/zhHK.ts b/packages/x-data-grid/src/locales/zhHK.ts
index f33d37f5fca4f..27bb323003d32 100644
--- a/packages/x-data-grid/src/locales/zhHK.ts
+++ b/packages/x-data-grid/src/locales/zhHK.ts
@@ -1,5 +1,7 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization } from '../utils/getGridLocalization';
+import { getGridLocalization, buildLocaleFormat } from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('zh-HK');
 
 const zhHKGrid: Partial<GridLocaleText> = {
   // Root
@@ -196,10 +198,11 @@ const zhHKGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: '每頁行數:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} 共 ${count !== -1 ? count : `超過 ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} 共 ${count !== -1 ? formatNumber(count) : `超過 ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `約 ${estimated}` : `超過 ${to}`;
-    return `${from}–${to} 共 ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to ? `約 ${formatNumber(estimated)}` : `超過 ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} 共 ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/locales/zhTW.ts b/packages/x-data-grid/src/locales/zhTW.ts
index aeb1e82586c84..308c94b2f89f9 100644
--- a/packages/x-data-grid/src/locales/zhTW.ts
+++ b/packages/x-data-grid/src/locales/zhTW.ts
@@ -1,5 +1,11 @@
 import type { GridLocaleText } from '../models/api/gridLocaleTextApi';
-import { getGridLocalization, type Localization } from '../utils/getGridLocalization';
+import {
+  getGridLocalization,
+  type Localization,
+  buildLocaleFormat,
+} from '../utils/getGridLocalization';
+
+const formatNumber = buildLocaleFormat('zh-TW');
 
 const zhTWGrid: Partial<GridLocaleText> = {
   // Root
@@ -193,10 +199,11 @@ const zhTWGrid: Partial<GridLocaleText> = {
   paginationRowsPerPage: '每頁數量:',
   paginationDisplayedRows: ({ from, to, count, estimated }) => {
     if (!estimated) {
-      return `${from}–${to} 共 ${count !== -1 ? count : `超過 ${to}`}`;
+      return `${formatNumber(from)}–${formatNumber(to)} 共 ${count !== -1 ? formatNumber(count) : `超過 ${formatNumber(to)}`}`;
     }
-    const estimatedLabel = estimated && estimated > to ? `約 ${estimated}` : `超過 ${to}`;
-    return `${from}–${to} 共 ${count !== -1 ? count : estimatedLabel}`;
+    const estimatedLabel =
+      estimated && estimated > to ? `約 ${formatNumber(estimated)}` : `超過 ${formatNumber(to)}`;
+    return `${formatNumber(from)}–${formatNumber(to)} 共 ${count !== -1 ? formatNumber(count) : estimatedLabel}`;
   },
   paginationItemAriaLabel: (type) => {
     if (type === 'first') {
diff --git a/packages/x-data-grid/src/utils/formatNumber.test.ts b/packages/x-data-grid/src/utils/formatNumber.test.ts
new file mode 100644
index 0000000000000..01c599a336abe
--- /dev/null
+++ b/packages/x-data-grid/src/utils/formatNumber.test.ts
@@ -0,0 +1,171 @@
+import { formatNumber } from './getGridLocalization';
+import { isJSDOM } from './isJSDOM';
+
+describe('formatNumber', () => {
+  it('should format numbers with thousands separators', () => {
+    expect(formatNumber(1000)).to.equal('1,000');
+    expect(formatNumber(10000)).to.equal('10,000');
+    expect(formatNumber(1000000)).to.equal('1,000,000');
+  });
+
+  it('should handle string numbers', () => {
+    expect(formatNumber('1000')).to.equal('1,000');
+    expect(formatNumber('10000')).to.equal('10,000');
+  });
+
+  it('should return original value for non-numeric strings', () => {
+    expect(formatNumber('invalid')).to.equal('invalid');
+    expect(formatNumber('abc123')).to.equal('abc123');
+  });
+
+  it('should handle edge cases', () => {
+    expect(formatNumber(0)).to.equal('0');
+    expect(formatNumber(-1000)).to.equal('-1,000');
+    expect(formatNumber(NaN)).to.equal('NaN');
+    expect(formatNumber(Infinity)).to.equal('Infinity');
+    expect(formatNumber(-Infinity)).to.equal('-Infinity');
+  });
+
+  it('should handle decimal numbers', () => {
+    expect(formatNumber(1234.56)).to.equal('1,234.56');
+    expect(formatNumber(1000.999)).to.equal('1,000.999');
+  });
+
+  it('should handle very large numbers', () => {
+    expect(formatNumber(1e15)).to.equal('1,000,000,000,000,000');
+  });
+
+  describe('should format numbers according to locale', () => {
+    it('en-US (comma separator)', () => {
+      expect(formatNumber(1000, 'en-US')).to.equal('1,000');
+      expect(formatNumber(1000000, 'en-US')).to.equal('1,000,000');
+    });
+
+    it('ar-SD (Arabic-Indic numerals)', () => {
+      expect(formatNumber(1000, 'ar-SD')).to.equal('١٬٠٠٠');
+    });
+
+    it('ca-ES (dot separator)', () => {
+      expect(formatNumber(1000, 'ca-ES')).to.equal('1.000');
+    });
+
+    it('cs-CZ (non-breaking space separator)', () => {
+      expect(formatNumber(1000, 'cs-CZ')).to.equal('1\u00a0000');
+    });
+
+    it('de-DE (dot separator)', () => {
+      expect(formatNumber(1000, 'de-DE')).to.equal('1.000');
+      expect(formatNumber(1000000, 'de-DE')).to.equal('1.000.000');
+    });
+
+    it('es-ES (no separator for thousands)', () => {
+      expect(formatNumber(1000, 'es-ES')).to.equal('1000');
+    });
+
+    it('fr-FR (narrow no-break space separator)', () => {
+      expect(formatNumber(1000, 'fr-FR')).to.equal('1\u202f000');
+      expect(formatNumber(1000000, 'fr-FR')).to.equal('1\u202f000\u202f000');
+    });
+
+    it('he-IL (comma separator)', () => {
+      expect(formatNumber(1000, 'he-IL')).to.equal('1,000');
+    });
+
+    it('hr-HR (dot separator)', () => {
+      expect(formatNumber(1000, 'hr-HR')).to.equal('1.000');
+    });
+
+    it('id-ID (dot separator)', () => {
+      expect(formatNumber(1000, 'id-ID')).to.equal('1.000');
+    });
+
+    it('it-IT (no separator for thousands)', () => {
+      expect(formatNumber(1000, 'it-IT')).to.equal('1000');
+    });
+
+    it('ja-JP (comma separator)', () => {
+      expect(formatNumber(1000, 'ja-JP')).to.equal('1,000');
+    });
+
+    it('ko-KR (comma separator)', () => {
+      expect(formatNumber(1000, 'ko-KR')).to.equal('1,000');
+    });
+
+    it('nb-NO (non-breaking space separator)', () => {
+      expect(formatNumber(1000, 'nb-NO')).to.equal('1\u00a0000');
+    });
+
+    // Chromium formats nn-NO with commas instead of non-breaking spaces
+    it.skipIf(!isJSDOM)('nn-NO (non-breaking space separator)', () => {
+      expect(formatNumber(1000, 'nn-NO')).to.equal('1\u00a0000');
+    });
+
+    it('pl-PL (no separator for thousands)', () => {
+      expect(formatNumber(1000, 'pl-PL')).to.equal('1000');
+    });
+
+    it('pt-BR (dot separator)', () => {
+      expect(formatNumber(1000, 'pt-BR')).to.equal('1.000');
+    });
+
+    it('pt-PT (no separator for thousands)', () => {
+      expect(formatNumber(1000, 'pt-PT')).to.equal('1000');
+    });
+
+    it('sk-SK (non-breaking space separator)', () => {
+      expect(formatNumber(1000, 'sk-SK')).to.equal('1\u00a0000');
+    });
+
+    it('zh-CN (comma separator)', () => {
+      expect(formatNumber(1000, 'zh-CN')).to.equal('1,000');
+    });
+
+    it('zh-HK (comma separator)', () => {
+      expect(formatNumber(1000, 'zh-HK')).to.equal('1,000');
+    });
+
+    it('zh-TW (comma separator)', () => {
+      expect(formatNumber(1000, 'zh-TW')).to.equal('1,000');
+    });
+  });
+
+  describe('when Intl is not available', () => {
+    let originalIntl: typeof Intl;
+
+    beforeEach(() => {
+      originalIntl = globalThis.Intl;
+      // @ts-ignore
+      delete globalThis.Intl;
+    });
+
+    afterEach(() => {
+      globalThis.Intl = originalIntl;
+    });
+
+    it('should fallback to string representation', () => {
+      expect(formatNumber(1000)).to.equal('1000');
+      expect(formatNumber(10000)).to.equal('10000');
+    });
+  });
+
+  describe('when Intl.NumberFormat throws', () => {
+    let originalNumberFormat: typeof Intl.NumberFormat;
+
+    beforeEach(() => {
+      originalNumberFormat = Intl.NumberFormat;
+      // @ts-ignore
+      Intl.NumberFormat = () => {
+        throw new Error('NumberFormat error');
+      };
+    });
+
+    afterEach(() => {
+      Intl.NumberFormat = originalNumberFormat;
+    });
+
+    it('should fallback to string representation', () => {
+      expect(formatNumber(1000)).to.equal('1000');
+      expect(formatNumber(10000)).to.equal('10000');
+    });
+  });
+});
diff --git a/packages/x-data-grid/src/utils/getGridLocalization.ts b/packages/x-data-grid/src/utils/getGridLocalization.ts
index 2b8802e19d532..dbb6b5de003a7 100644
--- a/packages/x-data-grid/src/utils/getGridLocalization.ts
+++ b/packages/x-data-grid/src/utils/getGridLocalization.ts
@@ -19,3 +19,26 @@ export const getGridLocalization = (gridTranslations: Partial<GridLocaleText>):
     },
   },
 });
+
+export const formatNumber = (value: number | string, locale?: string): string => {
+  const numValue = typeof value === 'string' ? Number(value) : value;
+
+  if (!Number.isFinite(numValue)) {
+    return String(value);
+  }
+
+  if (typeof Intl !== 'undefined' && Intl.NumberFormat) {
+    try {
+      return new Intl.NumberFormat(locale).format(numValue);
+    } catch {
+      return String(numValue);
+    }
+  }
+
+  return String(numValue);
+};
+
+// Helper to create formatNumber with a specific locale
+export const buildLocaleFormat = (locale: string) => {
+  return (value: number | string) => formatNumber(value, locale);
+};