diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index df06edf..bdd8948 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,4 +1,5 @@
 import { useState, useEffect, useCallback } from 'react';
+import { useLocalStorage, useLocalStorageSet } from './hooks/useLocalStorage';
 import { ReplayMap } from './components/iran/ReplayMap';
 import type { FlyToTarget } from './components/iran/ReplayMap';
 import { GlobeMap } from './components/iran/GlobeMap';
@@ -68,9 +69,9 @@ interface AuthenticatedAppProps {
 
 function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
   const [appMode, setAppMode] = useState<AppMode>('live');
-  const [mapMode, setMapMode] = useState<'flat' | 'globe' | 'satellite'>('satellite');
-  const [dashboardTab, setDashboardTab] = useState<'iran' | 'korea'>('iran');
-  const [layers, setLayers] = useState<LayerVisibility>({
+  const [mapMode, setMapMode] = useLocalStorage<'flat' | 'globe' | 'satellite'>('mapMode', 'satellite');
+  const [dashboardTab, setDashboardTab] = useLocalStorage<'iran' | 'korea'>('dashboardTab', 'iran');
+  const [layers, setLayers] = useLocalStorage<LayerVisibility>('iranLayers', {
     events: true,
     aircraft: true,
     satellites: true,
@@ -94,7 +95,7 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
   });
 
   // Korea tab layer visibility (lifted from KoreaMap)
-  const [koreaLayers, setKoreaLayers] = useState<Record<string, boolean>>({
+  const [koreaLayers, setKoreaLayers] = useLocalStorage<Record<string, boolean>>('koreaLayers', {
     ships: true,
     aircraft: true,
     satellites: true,
@@ -134,11 +135,11 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
 
   const toggleKoreaLayer = useCallback((key: string) => {
     setKoreaLayers(prev => ({ ...prev, [key]: !prev[key] }));
-  }, []);
+  }, [setKoreaLayers]);
 
   // Category filter state (shared across tabs)
-  const [hiddenAcCategories, setHiddenAcCategories] = useState<Set<string>>(new Set());
-  const [hiddenShipCategories, setHiddenShipCategories] = useState<Set<string>>(new Set());
+  const [hiddenAcCategories, setHiddenAcCategories] = useLocalStorageSet('hiddenAcCategories', new Set());
+  const [hiddenShipCategories, setHiddenShipCategories] = useLocalStorageSet('hiddenShipCategories', new Set());
 
   const toggleAcCategory = useCallback((cat: string) => {
     setHiddenAcCategories(prev => {
@@ -146,7 +147,7 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
       if (next.has(cat)) { next.delete(cat); } else { next.add(cat); }
       return next;
     });
-  }, []);
+  }, [setHiddenAcCategories]);
 
   const toggleShipCategory = useCallback((cat: string) => {
     setHiddenShipCategories(prev => {
@@ -154,27 +155,27 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
       if (next.has(cat)) { next.delete(cat); } else { next.add(cat); }
       return next;
     });
-  }, []);
+  }, [setHiddenShipCategories]);
 
   // Nationality filter state (Korea tab)
-  const [hiddenNationalities, setHiddenNationalities] = useState<Set<string>>(new Set());
+  const [hiddenNationalities, setHiddenNationalities] = useLocalStorageSet('hiddenNationalities', new Set());
   const toggleNationality = useCallback((nat: string) => {
     setHiddenNationalities(prev => {
       const next = new Set(prev);
       if (next.has(nat)) { next.delete(nat); } else { next.add(nat); }
       return next;
     });
-  }, []);
+  }, [setHiddenNationalities]);
 
   // Fishing vessel nationality filter state
-  const [hiddenFishingNats, setHiddenFishingNats] = useState<Set<string>>(new Set());
+  const [hiddenFishingNats, setHiddenFishingNats] = useLocalStorageSet('hiddenFishingNats', new Set());
   const toggleFishingNat = useCallback((nat: string) => {
     setHiddenFishingNats(prev => {
       const next = new Set(prev);
       if (next.has(nat)) { next.delete(nat); } else { next.add(nat); }
       return next;
     });
-  }, []);
+  }, [setHiddenFishingNats]);
 
   const [flyToTarget, setFlyToTarget] = useState<FlyToTarget | null>(null);
 
@@ -243,7 +244,7 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
 
   const toggleLayer = useCallback((key: keyof LayerVisibility) => {
     setLayers(prev => ({ ...prev, [key]: !prev[key] }));
-  }, []);
+  }, [setLayers]);
 
   // Handle event card click from timeline: fly to location on map
   const handleEventFlyTo = useCallback((event: GeoEvent) => {
diff --git a/frontend/src/components/common/LayerPanel.tsx b/frontend/src/components/common/LayerPanel.tsx
index b41844e..0f4c3bf 100644
--- a/frontend/src/components/common/LayerPanel.tsx
+++ b/frontend/src/components/common/LayerPanel.tsx
@@ -1,5 +1,6 @@
 import { useState, useCallback } from 'react';
 import { useTranslation } from 'react-i18next';
+import { useLocalStorageSet } from '../../hooks/useLocalStorage';
 
 // Aircraft category colors (matches AircraftLayer military fixed colors)
 const AC_CAT_COLORS: Record<string, string> = {
@@ -172,7 +173,7 @@ export function LayerPanel({
   onFishingNatToggle,
 }: LayerPanelProps) {
   const { t } = useTranslation(['common', 'ships']);
-  const [expanded, setExpanded] = useState<Set<string>>(new Set(['ships']));
+  const [expanded, setExpanded] = useLocalStorageSet('layerPanelExpanded', new Set(['ships']));
   const [legendOpen, setLegendOpen] = useState<Set<string>>(new Set());
 
   const toggleExpand = useCallback((key: string) => {
@@ -181,7 +182,7 @@ export function LayerPanel({
       if (next.has(key)) { next.delete(key); } else { next.add(key); }
       return next;
     });
-  }, []);
+  }, [setExpanded]);
 
   const toggleLegend = useCallback((key: string) => {
     setLegendOpen(prev => {
diff --git a/frontend/src/components/korea/AnalysisStatsPanel.tsx b/frontend/src/components/korea/AnalysisStatsPanel.tsx
index dd8b27f..836d8bc 100644
--- a/frontend/src/components/korea/AnalysisStatsPanel.tsx
+++ b/frontend/src/components/korea/AnalysisStatsPanel.tsx
@@ -1,6 +1,7 @@
-import { useState, useMemo } from 'react';
+import { useState, useMemo, useEffect } from 'react';
 import type { VesselAnalysisDto, RiskLevel, Ship } from '../../types';
 import type { AnalysisStats } from '../../hooks/useVesselAnalysis';
+import { useLocalStorage } from '../../hooks/useLocalStorage';
 import { fetchVesselTrack } from '../../services/vesselTrack';
 
 interface Props {
@@ -12,6 +13,7 @@ interface Props {
   allShips?: Ship[];
   onShipSelect?: (mmsi: string) => void;
   onTrackLoad?: (mmsi: string, coords: [number, number][]) => void;
+  onExpandedChange?: (expanded: boolean) => void;
 }
 
 interface VesselListItem {
@@ -71,8 +73,16 @@ const LEGEND_LINES = [
   '스푸핑: 순간이동+SOG급변+BD09 종합',
 ];
 
-export function AnalysisStatsPanel({ stats, lastUpdated, isLoading, analysisMap, ships, allShips, onShipSelect, onTrackLoad }: Props) {
-  const [expanded, setExpanded] = useState(true);
+export function AnalysisStatsPanel({ stats, lastUpdated, isLoading, analysisMap, ships, allShips, onShipSelect, onTrackLoad, onExpandedChange }: Props) {
+  const [expanded, setExpanded] = useLocalStorage('analysisPanelExpanded', false);
+  const toggleExpanded = () => {
+    const next = !expanded;
+    setExpanded(next);
+    onExpandedChange?.(next);
+  };
+  // 마운트 시 저장된 상태를 부모에 동기화
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  useEffect(() => { onExpandedChange?.(expanded); }, []);
   const [selectedLevel, setSelectedLevel] = useState<RiskLevel | null>(null);
   const [selectedMmsi, setSelectedMmsi] = useState<string | null>(null);
   const [showLegend, setShowLegend] = useState(false);
@@ -124,8 +134,8 @@ export function AnalysisStatsPanel({ stats, lastUpdated, isLoading, analysisMap,
 
   const panelStyle: React.CSSProperties = {
     position: 'absolute',
-    top: 60,
-    right: 10,
+    top: 10,
+    right: 50,
     zIndex: 10,
     minWidth: 200,
     maxWidth: 280,
@@ -231,7 +241,7 @@ export function AnalysisStatsPanel({ stats, lastUpdated, isLoading, analysisMap,
           </button>
           <button
             style={toggleButtonStyle}
-            onClick={() => setExpanded(prev => !prev)}
+            onClick={toggleExpanded}
             aria-label={expanded ? '패널 접기' : '패널 펼치기'}
           >
             {expanded ? '▲' : '▼'}
diff --git a/frontend/src/components/korea/KoreaMap.tsx b/frontend/src/components/korea/KoreaMap.tsx
index c0b36f0..e608001 100644
--- a/frontend/src/components/korea/KoreaMap.tsx
+++ b/frontend/src/components/korea/KoreaMap.tsx
@@ -34,6 +34,7 @@ import type { Ship, Aircraft, SatellitePosition } from '../../types';
 import type { OsintItem } from '../../services/osint';
 import type { UseVesselAnalysisResult } from '../../hooks/useVesselAnalysis';
 import { countryLabelsGeoJSON } from '../../data/countryLabels';
+import { useLocalStorage } from '../../hooks/useLocalStorage';
 import 'maplibre-gl/dist/maplibre-gl.css';
 
 export interface KoreaFiltersState {
@@ -142,6 +143,7 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
   const [selectedFleetData, setSelectedFleetData] = useState<SelectedFleetData | null>(null);
   const [zoomLevel, setZoomLevel] = useState(KOREA_MAP_ZOOM);
   const [staticPickInfo, setStaticPickInfo] = useState<StaticPickInfo | null>(null);
+  const [analysisPanelOpen, setAnalysisPanelOpen] = useLocalStorage('analysisPanelOpen', false);
 
   useEffect(() => {
     fetchKoreaInfra().then(setInfra).catch(() => {});
@@ -638,7 +640,7 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
         zoneLabelsLayer,
         ...selectedGearLayers,
         ...selectedFleetLayers,
-        ...analysisDeckLayers,
+        ...(analysisPanelOpen ? analysisDeckLayers : []),
       ].filter(Boolean)} />
       {/* 정적 마커 클릭 Popup — 통합 리치 디자인 */}
       {staticPickInfo && (() => {
@@ -928,6 +930,7 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
           allShips={allShips ?? ships}
           onShipSelect={handleAnalysisShipSelect}
           onTrackLoad={handleTrackLoad}
+          onExpandedChange={setAnalysisPanelOpen}
         />
       )}
     </Map>
diff --git a/frontend/src/hooks/useKoreaFilters.ts b/frontend/src/hooks/useKoreaFilters.ts
index da78c1f..253599d 100644
--- a/frontend/src/hooks/useKoreaFilters.ts
+++ b/frontend/src/hooks/useKoreaFilters.ts
@@ -1,4 +1,5 @@
 import { useState, useMemo, useRef } from 'react';
+import { useLocalStorage } from './useLocalStorage';
 import { KOREA_SUBMARINE_CABLES } from '../services/submarineCable';
 import { getMarineTrafficCategory } from '../utils/marineTraffic';
 import { classifyFishingZone } from '../utils/fishingAnalysis';
@@ -45,7 +46,7 @@ export function useKoreaFilters(
   analysisMap?: Map<string, VesselAnalysisDto>,
   cnFishingOn = false,
 ): UseKoreaFiltersResult {
-  const [filters, setFilters] = useState<KoreaFilters>({
+  const [filters, setFilters] = useLocalStorage<KoreaFilters>('koreaFilters', {
     illegalFishing: false,
     illegalTransship: false,
     darkVessel: false,
diff --git a/frontend/src/hooks/useLocalStorage.ts b/frontend/src/hooks/useLocalStorage.ts
new file mode 100644
index 0000000..a2bdbed
--- /dev/null
+++ b/frontend/src/hooks/useLocalStorage.ts
@@ -0,0 +1,68 @@
+import { useState, useCallback } from 'react';
+
+const PREFIX = 'kcg.';
+
+/**
+ * localStorage 연동 useState — JSON 직렬화/역직렬화 자동 처리.
+ * 새 키가 추가된 Record 타입은 defaults와 자동 머지.
+ */
+export function useLocalStorage<T>(key: string, defaults: T): [T, (v: T | ((prev: T) => T)) => void] {
+  const storageKey = PREFIX + key;
+
+  const [value, setValueRaw] = useState<T>(() => {
+    try {
+      const raw = localStorage.getItem(storageKey);
+      if (raw === null) return defaults;
+      const parsed = JSON.parse(raw) as T;
+      // Record 타입이면 defaults에 있는 키가 저장값에 없을 때 머지
+      if (defaults !== null && typeof defaults === 'object' && !Array.isArray(defaults)) {
+        return { ...defaults, ...parsed };
+      }
+      return parsed;
+    } catch {
+      return defaults;
+    }
+  });
+
+  const setValue = useCallback((updater: T | ((prev: T) => T)) => {
+    setValueRaw(prev => {
+      const next = typeof updater === 'function' ? (updater as (prev: T) => T)(prev) : updater;
+      try {
+        localStorage.setItem(storageKey, JSON.stringify(next));
+      } catch { /* quota exceeded — 무시 */ }
+      return next;
+    });
+  }, [storageKey]);
+
+  return [value, setValue];
+}
+
+/**
+ * Set<string>용 localStorage 연동 — 내부적으로 Array로 직렬화.
+ */
+export function useLocalStorageSet(key: string, defaults: Set<string>): [Set<string>, (v: Set<string> | ((prev: Set<string>) => Set<string>)) => void] {
+  const storageKey = PREFIX + key;
+
+  const [value, setValueRaw] = useState<Set<string>>(() => {
+    try {
+      const raw = localStorage.getItem(storageKey);
+      if (raw === null) return defaults;
+      const arr = JSON.parse(raw);
+      return Array.isArray(arr) ? new Set(arr) : defaults;
+    } catch {
+      return defaults;
+    }
+  });
+
+  const setValue = useCallback((updater: Set<string> | ((prev: Set<string>) => Set<string>)) => {
+    setValueRaw(prev => {
+      const next = typeof updater === 'function' ? updater(prev) : updater;
+      try {
+        localStorage.setItem(storageKey, JSON.stringify(Array.from(next)));
+      } catch { /* quota exceeded */ }
+      return next;
+    });
+  }, [storageKey]);
+
+  return [value, setValue];
+}