diff --git a/Mac/AppDelegate.swift b/Mac/AppDelegate.swift
index 845488b78..0af995f61 100644
--- a/Mac/AppDelegate.swift
+++ b/Mac/AppDelegate.swift
@@ -485,8 +485,7 @@ import Sparkle
 	}
 
 	@objc func updateDockBadge() {
-		let label = unreadCount > 0 ? "\(unreadCount)" : ""
-		NSApplication.shared.dockTile.badgeLabel = label
+		NSApplication.shared.dockTile.badgeLabel = UnreadCountFormatter.string(from: unreadCount)
 	}
 
 	// MARK: - Actions
diff --git a/Mac/MainWindow/Sidebar/Cell/SidebarCell.swift b/Mac/MainWindow/Sidebar/Cell/SidebarCell.swift
index 7cefbd021..5d90408a0 100644
--- a/Mac/MainWindow/Sidebar/Cell/SidebarCell.swift
+++ b/Mac/MainWindow/Sidebar/Cell/SidebarCell.swift
@@ -113,7 +113,8 @@ class SidebarCell : NSTableCellView {
 	override func accessibilityLabel() -> String? {
 		if unreadCount > 0 {
 			let unreadLabel = NSLocalizedString("unread", comment: "Unread label for accessiblity")
-			return "\(name) \(unreadCount) \(unreadLabel)"
+			let unreadCountString = UnreadCountFormatter.string(from: unreadCount)
+			return "\(name) \(unreadCountString) \(unreadLabel)"
 		} else {
 			return name
 		}
diff --git a/Mac/MainWindow/Sidebar/UnreadCountView.swift b/Mac/MainWindow/Sidebar/UnreadCountView.swift
index 2205036b6..fc5886658 100644
--- a/Mac/MainWindow/Sidebar/UnreadCountView.swift
+++ b/Mac/MainWindow/Sidebar/UnreadCountView.swift
@@ -27,7 +27,7 @@ final class UnreadCountView : NSView {
 		}
 	}
 	var unreadCountString: String {
-		return unreadCount < 1 ? "" : "\(unreadCount)"
+		UnreadCountFormatter.string(from: unreadCount)
 	}
 
 	private var intrinsicContentSizeIsValid = false
diff --git a/NetNewsWire.xcodeproj/project.pbxproj b/NetNewsWire.xcodeproj/project.pbxproj
index d99cac1d8..b3bcdc895 100644
--- a/NetNewsWire.xcodeproj/project.pbxproj
+++ b/NetNewsWire.xcodeproj/project.pbxproj
@@ -495,6 +495,8 @@
 		84F9EAF3213660A100CF2DE4 /* testCurrentArticleIsNil.applescript in Sources */ = {isa = PBXBuildFile; fileRef = 84F9EAE0213660A100CF2DE4 /* testCurrentArticleIsNil.applescript */; };
 		84F9EAF4213660A100CF2DE4 /* testGenericScript.applescript in Sources */ = {isa = PBXBuildFile; fileRef = 84F9EAE1213660A100CF2DE4 /* testGenericScript.applescript */; };
 		84F9EAF5213660A100CF2DE4 /* establishMainWindowStartingState.applescript in Sources */ = {isa = PBXBuildFile; fileRef = 84F9EAE2213660A100CF2DE4 /* establishMainWindowStartingState.applescript */; };
+		84FCB8742CCDFB7800CCC2F8 /* UnreadCountFormatter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84FCB8732CCDFB7800CCC2F8 /* UnreadCountFormatter.swift */; };
+		84FCB8752CCDFB7800CCC2F8 /* UnreadCountFormatter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84FCB8732CCDFB7800CCC2F8 /* UnreadCountFormatter.swift */; };
 		B24E9ADC245AB88400DA5718 /* NSAttributedString+NetNewsWire.swift in Sources */ = {isa = PBXBuildFile; fileRef = B24E9ABA245AB88300DA5718 /* NSAttributedString+NetNewsWire.swift */; };
 		B24E9ADE245AB88400DA5718 /* NSAttributedString+NetNewsWire.swift in Sources */ = {isa = PBXBuildFile; fileRef = B24E9ABA245AB88300DA5718 /* NSAttributedString+NetNewsWire.swift */; };
 		B27EEBF9244D15F3000932E6 /* stylesheet.css in Resources */ = {isa = PBXBuildFile; fileRef = B27EEBDF244D15F2000932E6 /* stylesheet.css */; };
@@ -1116,6 +1118,7 @@
 		84F9EAE1213660A100CF2DE4 /* testGenericScript.applescript */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.applescript; path = testGenericScript.applescript; sourceTree = "<group>"; };
 		84F9EAE2213660A100CF2DE4 /* establishMainWindowStartingState.applescript */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.applescript; path = establishMainWindowStartingState.applescript; sourceTree = "<group>"; };
 		84F9EAE4213660A100CF2DE4 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		84FCB8732CCDFB7800CCC2F8 /* UnreadCountFormatter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UnreadCountFormatter.swift; sourceTree = "<group>"; };
 		B24E9ABA245AB88300DA5718 /* NSAttributedString+NetNewsWire.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "NSAttributedString+NetNewsWire.swift"; sourceTree = "<group>"; };
 		B24EFD482330FF99006C6242 /* NetNewsWire-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "NetNewsWire-Bridging-Header.h"; sourceTree = "<group>"; };
 		B24EFD5923310109006C6242 /* WKPreferencesPrivate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = WKPreferencesPrivate.h; sourceTree = "<group>"; };
@@ -2025,6 +2028,7 @@
 				511B9805237DCAC90028BCAA /* UserInfoKey.swift */,
 				844933D12BA953590068AC51 /* ArticlePathInfo.swift */,
 				8454C3F2263F2D8700E3F9C7 /* IconImageCache.swift */,
+				84FCB8732CCDFB7800CCC2F8 /* UnreadCountFormatter.swift */,
 				845122752B8CEA9B00480DB0 /* SidebarItem */,
 				51C452AD2265102800C03939 /* Timeline */,
 				84702AB31FA27AE8006B8943 /* Commands */,
@@ -3179,6 +3183,7 @@
 				51627A6923861DED007B3B4B /* FeedsViewController+Drop.swift in Sources */,
 				514219372352510100E07E2C /* ImageScrollView.swift in Sources */,
 				516AE9B32371C372007DEEAA /* FeedTableViewSectionHeaderLayout.swift in Sources */,
+				84FCB8752CCDFB7800CCC2F8 /* UnreadCountFormatter.swift in Sources */,
 				D3555BF524664566005E48C3 /* ArticleSearchBar.swift in Sources */,
 				8454C3F3263F2D8700E3F9C7 /* IconImageCache.swift in Sources */,
 				B24E9ADE245AB88400DA5718 /* NSAttributedString+NetNewsWire.swift in Sources */,
@@ -3265,6 +3270,7 @@
 				849A975C1ED9EB0D007D329B /* DefaultFeedsImporter.swift in Sources */,
 				84A37CB5201ECD610087C5AF /* RenameWindowController.swift in Sources */,
 				84A14FF320048CA70046AD9A /* SendToMicroBlogCommand.swift in Sources */,
+				84FCB8742CCDFB7800CCC2F8 /* UnreadCountFormatter.swift in Sources */,
 				849A97891ED9ECEF007D329B /* ArticleTheme.swift in Sources */,
 				84B7178C201E66580091657D /* SidebarViewController+ContextualMenus.swift in Sources */,
 				84A1500520048DDF0046AD9A /* SendToMarsEditCommand.swift in Sources */,
diff --git a/Shared/UnreadCountFormatter.swift b/Shared/UnreadCountFormatter.swift
new file mode 100644
index 000000000..6b6342c14
--- /dev/null
+++ b/Shared/UnreadCountFormatter.swift
@@ -0,0 +1,27 @@
+//
+//  UnreadCountFormatter.swift
+//  NetNewsWire
+//
+//  Created by Brent Simmons on 10/26/24.
+//  Copyright © 2024 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+
+@MainActor struct UnreadCountFormatter {
+
+	private static let formatter: NumberFormatter = {
+		let nf = NumberFormatter()
+		nf.locale = Locale.current
+		nf.numberStyle = .decimal
+		return nf
+	}()
+
+	static func string(from unreadCount: Int) -> String {
+		if unreadCount < 1 {
+			return ""
+		}
+
+		return formatter.string(from: NSNumber(value: unreadCount))!
+	}
+}
diff --git a/iOS/Feeds/Cell/FeedTableViewCell.swift b/iOS/Feeds/Cell/FeedTableViewCell.swift
index 7916fbede..f539a9c95 100644
--- a/iOS/Feeds/Cell/FeedTableViewCell.swift
+++ b/iOS/Feeds/Cell/FeedTableViewCell.swift
@@ -26,7 +26,8 @@ class FeedTableViewCell : VibrantTableViewCell {
 		get {
 			if unreadCount > 0 {
 				let unreadLabel = NSLocalizedString("unread", comment: "Unread label for accessiblity")
-				return "\(name) \(unreadCount) \(unreadLabel)"
+				let unreadCountString = UnreadCountFormatter.string(from: unreadCount)
+				return "\(name) \(unreadCountString) \(unreadLabel)"
 			} else {
 				return name
 			}
diff --git a/iOS/Feeds/Cell/FeedTableViewSectionHeader.swift b/iOS/Feeds/Cell/FeedTableViewSectionHeader.swift
index 9dcd5ad2b..0beea7691 100644
--- a/iOS/Feeds/Cell/FeedTableViewSectionHeader.swift
+++ b/iOS/Feeds/Cell/FeedTableViewSectionHeader.swift
@@ -23,7 +23,8 @@ class FeedTableViewSectionHeader: UITableViewHeaderFooterView {
 		get {
 			if unreadCount > 0 {
 				let unreadLabel = NSLocalizedString("unread", comment: "Unread label for accessiblity")
-				return "\(name) \(unreadCount) \(unreadLabel) \(expandedStateMessage) "
+				let unreadCountString = UnreadCountFormatter.string(from: unreadCount)
+				return "\(name) \(unreadCountString) \(unreadLabel) \(expandedStateMessage) "
 			} else {
 				return "\(name) \(expandedStateMessage) "
 			}
diff --git a/iOS/Feeds/Cell/FeedUnreadCountView.swift b/iOS/Feeds/Cell/FeedUnreadCountView.swift
index f85e2abc5..f41213b06 100644
--- a/iOS/Feeds/Cell/FeedUnreadCountView.swift
+++ b/iOS/Feeds/Cell/FeedUnreadCountView.swift
@@ -35,7 +35,7 @@ class FeedUnreadCountView : UIView {
 	}
 	
 	var unreadCountString: String {
-		return unreadCount < 1 ? "" : "\(unreadCount)"
+		UnreadCountFormatter.string(from: unreadCount)
 	}
 
 	private var contentSizeIsValid = false