diff --git a/app/game-frontend/e2e/nationCityOfficeIntegration.spec.ts b/app/game-frontend/e2e/nationCityOfficeIntegration.spec.ts
index 4d03ec05..7eda1585 100644
--- a/app/game-frontend/e2e/nationCityOfficeIntegration.spec.ts
+++ b/app/game-frontend/e2e/nationCityOfficeIntegration.spec.ts
@@ -1,4 +1,7 @@
 import { expect, test, type Page, type Route } from '@playwright/test';
+import { writeFile } from 'node:fs/promises';
+
+import type { trpc } from '../src/utils/trpc.js';
 
 import { gameProfile, gameTrpcRoute } from './gameTestPaths.js';
 import { expectLumenButtonStates } from './lumenButton.js';
@@ -306,7 +309,11 @@ const personnelFixture = (state: FixtureState) => {
     };
 };
 
-const install = async (page: Page, state: FixtureState): Promise<void> => {
+const install = async (
+    page: Page,
+    state: FixtureState,
+    overviewCities?: Awaited<ReturnType<typeof trpc.nation.getCityOverview.query>>['cities']
+): Promise<void> => {
     await page.addInitScript((profile) => {
         localStorage.setItem('sammo-game-token', 'ga_city_office');
         localStorage.setItem('sammo-game-profile', profile);
@@ -316,7 +323,10 @@ const install = async (page: Page, state: FixtureState): Promise<void> => {
             if (operation === 'auth.status') return response({ ok: true });
             if (operation === 'lobby.info') return response({ myGeneral: { id: 20, name: '순욱' } });
             if (operation === 'join.getConfig') return response({});
-            if (operation === 'nation.getCityOverview') return response(overviewFixture(state));
+            if (operation === 'nation.getCityOverview') {
+                const overview = overviewFixture(state);
+                return response({ ...overview, cities: overviewCities ?? overview.cities });
+            }
             if (operation === 'nation.getSecretGeneralList') {
                 return state.secretForbidden
                     ? errorResponse(
@@ -491,3 +501,88 @@ test('NPC prefixes stay single in city names and linked secret rows', async ({ p
         await page.screenshot({ path: testInfo.outputPath(`npc-city-prefix-${width}.png`), fullPage: true });
     }
 });
+
+for (const width of [1200, 500]) {
+    test(`세력도시 기본 정렬은 지역별로 묶고 같은 지역 안에서 규모순으로 표시한다 (${width}px)`, async ({
+        page,
+    }, testInfo) => {
+        const state: FixtureState = { role: 'head', appointed: false, appointmentInputs: [] };
+        const baseCity = overviewFixture(state).cities[0]!;
+        // ID·시세·규모순이 지역 우선 정렬과 서로 다르게 되는 입력이다.
+        const overviewCities = [
+            { id: 10, name: '허창', region: 2, level: 8, trade: 60 },
+            { id: 20, name: '상당', region: 1, level: 5, trade: 130 },
+            { id: 30, name: '진류', region: 2, level: 5, trade: 110 },
+            { id: 40, name: '업', region: 1, level: 8, trade: 80 },
+            { id: 50, name: '북평', region: 1, level: 8, trade: 90 },
+        ].map((city) => ({ ...baseCity, ...city }));
+        await install(page, state, overviewCities);
+        await page.setViewportSize({ width, height: 900 });
+        await page.goto('nation/cities');
+        const tables = page.locator('.city');
+        await expect(tables).toHaveCount(5);
+        await page.evaluate(() => document.fonts.ready);
+        const cityOrder = () => tables.evaluateAll((elements) => elements.map((el) => Number(el.dataset.cityId)));
+        const regionStarts = () =>
+            page
+                .locator('.city.region-break')
+                .evaluateAll((elements) => elements.map((el) => Number(el.dataset.cityId)));
+        const expectedOrder = [40, 50, 20, 10, 30];
+        const select = page.locator('#nation-city-sort');
+        const submit = page.getByRole('button', { name: '정렬하기' });
+
+        await page.screenshot({ path: testInfo.outputPath('default-region-order.png'), fullPage: true });
+        await writeFile(
+            testInfo.outputPath('default-region-order.html'),
+            await page.locator('main').evaluate((el) => el.outerHTML)
+        );
+        const geometry = await tables.evaluateAll((elements) =>
+            elements.map((el) => {
+                const rect = el.getBoundingClientRect();
+                const style = getComputedStyle(el);
+                return {
+                    id: Number(el.dataset.cityId),
+                    title: el.querySelector('.city-title')?.textContent?.trim(),
+                    x: rect.x,
+                    y: rect.y,
+                    width: rect.width,
+                    height: rect.height,
+                    marginTop: style.marginTop,
+                    fontSize: style.fontSize,
+                    borderCollapse: style.borderCollapse,
+                };
+            })
+        );
+        await writeFile(
+            testInfo.outputPath('default-region-order.json'),
+            JSON.stringify({ url: page.url(), width, geometry }, null, 2)
+        );
+        await expect(select).toHaveValue('1');
+        expect(await cityOrder()).toEqual(expectedOrder);
+        expect(await regionStarts()).toEqual([40, 10]);
+        expect(geometry.map((city) => city.marginTop)).toEqual(['18px', '0px', '0px', '18px', '0px']);
+        await expect(tables.locator('.city-title')).toContainText(['하북', '하북', '하북', '중원', '중원']);
+
+        // 선택만으로는 적용하지 않고 submit 뒤에만 기존 명시적 정렬을 적용한다.
+        await select.selectOption('12');
+        expect(await cityOrder()).toEqual(expectedOrder);
+        await submit.click();
+        expect(await cityOrder()).toEqual([40, 50, 10, 20, 30]);
+        expect(await regionStarts()).toEqual([]);
+        await page.getByRole('button', { name: '시세 기준 정렬' }).first().click();
+        await expect(select).toHaveValue('10');
+        expect(await cityOrder()).toEqual([20, 30, 50, 40, 10]);
+        expect(await regionStarts()).toEqual([]);
+        for (const sort of ['11', '1']) {
+            await select.selectOption(sort);
+            await submit.click();
+            expect(await cityOrder()).toEqual(expectedOrder);
+            expect(await regionStarts()).toEqual([40, 10]);
+        }
+        await page.reload();
+        await expect(select).toHaveValue('1');
+        await expect(tables).toHaveCount(5);
+        expect(await cityOrder()).toEqual(expectedOrder);
+        expect(state.appointmentInputs).toEqual([]);
+    });
+}
diff --git a/app/game-frontend/src/views/NationCitiesView.vue b/app/game-frontend/src/views/NationCitiesView.vue
index c39516d4..2f44f92c 100644
--- a/app/game-frontend/src/views/NationCitiesView.vue
+++ b/app/game-frontend/src/views/NationCitiesView.vue
@@ -34,8 +34,8 @@ const integrationError = ref('');
 const secretLoading = ref(false);
 const personnelLoading = ref(false);
 const pendingAppointment = ref('');
-const sort = ref<Sort>(10);
-const selectedSort = ref<Sort>(10);
+const sort = ref<Sort>(1);
+const selectedSort = ref<Sort>(1);
 const extraSort = ref<
     | 'name'
     | 'populationRate'
@@ -95,7 +95,7 @@ const cities = computed(() => {
     }
     return values.sort((a, b) => {
         const key = sort.value;
-        if (key === 1) return a.id - b.id;
+        if (key === 1 || key === 11) return a.region - b.region || b.level - a.level;
         if (key === 2) return b.population - a.population;
         if (key === 3) return b.population / b.populationMax - a.population / a.populationMax;
         if (key === 4) return b.trust - a.trust;
@@ -105,7 +105,6 @@ const cities = computed(() => {
         if (key === 8) return b.defence - a.defence;
         if (key === 9) return b.wall - a.wall;
         if (key === 10) return (b.trade ?? -1) - (a.trade ?? -1);
-        if (key === 11) return a.region - b.region || b.level - a.level;
         return b.level - a.level || a.region - b.region;
     });
 });
@@ -148,7 +147,9 @@ const developmentClass = (
     return ratio > 0.8 ? 'development-high' : ratio > 0.4 ? 'development-mid' : 'development-low';
 };
 const isRegionBreak = (city: City, index: number) =>
-    sort.value === 10 && extraSort.value === null && (index === 0 || cities.value[index - 1]?.region !== city.region);
+    (sort.value === 1 || sort.value === 11) &&
+    extraSort.value === null &&
+    (index === 0 || cities.value[index - 1]?.region !== city.region);
 const officer = (city: City, level: 2 | 3 | 4) => city.officers[level]?.name ?? '-';
 const officerIsStationed = (city: City, level: OfficerLevel): boolean =>
     secretData.value !== null && city.officers[level]?.cityId === city.id;