diff --git a/apps/st/src/components/module/SearchForm.tsx b/apps/st/src/components/module/SearchForm.tsx
index 08b6e2b50..ccc76bc3d 100644
--- a/apps/st/src/components/module/SearchForm.tsx
+++ b/apps/st/src/components/module/SearchForm.tsx
@@ -172,6 +172,30 @@ const SearchForm = (props: SearchFormProps = {}) => {
     );
     const sggOptions = sggList?.data ?? [];
 
+    // 시도 설정 후 시군구 목록이 오면 첫 번째 항목 자동 선택
+    useEffect(() => {
+        if (!mergedProps.gugun) return;
+        if (props.defaultValues?.gugun) return;
+        if (!values.sido || values.sido === "ALL") return;
+
+        const firstSgg = sggList?.data?.[0];
+        if (!firstSgg) return;
+
+        setValues((prev) => {
+            if (prev.gugun) return prev;
+            return {
+                ...prev,
+                gugun: firstSgg.gugun,
+                bsnmCd: firstSgg.bsnmCd,
+            };
+        });
+    }, [
+        sggList,
+        values.sido,
+        mergedProps.gugun,
+        props.defaultValues?.gugun,
+    ]);
+
     const handleSubmit = (e: React.FormEvent<HTMLFormElement>) => {
         e.preventDefault();
         props.onSubmit?.(values);
diff --git a/apps/st/src/components/statistics/input/PrivateSewageFacilityInp.tsx b/apps/st/src/components/statistics/input/PrivateSewageFacilityInp.tsx
index 7a365dae9..b2edb8f2c 100644
--- a/apps/st/src/components/statistics/input/PrivateSewageFacilityInp.tsx
+++ b/apps/st/src/components/statistics/input/PrivateSewageFacilityInp.tsx
@@ -715,7 +715,7 @@ const PrivateSewageFacilityInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("제출 취소되었습니다.");
@@ -815,7 +815,7 @@ const PrivateSewageFacilityInp = () => {
                 tabKey,
                 searchParamRef.current!,
                 lastSearchedValues,
-                false,
+                true,
                 false,
             );
         };
@@ -988,7 +988,7 @@ const PrivateSewageFacilityInp = () => {
                             tabKey,
                             searchParamRef.current,
                             lastSearchedValues,
-                            false,
+                            true,
                             false,
                         );
                         alert("저장되었습니다.");
@@ -1012,7 +1012,7 @@ const PrivateSewageFacilityInp = () => {
                             tabKey,
                             searchParamRef.current,
                             lastSearchedValues,
-                            false,
+                            true,
                             false,
                         );
                         alert("저장되었습니다.");
@@ -1037,7 +1037,7 @@ const PrivateSewageFacilityInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("저장되었습니다.");
@@ -1288,7 +1288,7 @@ const PrivateSewageFacilityInp = () => {
                         activeTabRef.current,
                         searchParamRef.current,
                         values,
-                        false,
+                        true,
                         false,
                     );
                 }}
diff --git a/apps/st/src/components/statistics/input/SewageExcretaRelatedInp.tsx b/apps/st/src/components/statistics/input/SewageExcretaRelatedInp.tsx
index aeb2b712f..addeda5c0 100644
--- a/apps/st/src/components/statistics/input/SewageExcretaRelatedInp.tsx
+++ b/apps/st/src/components/statistics/input/SewageExcretaRelatedInp.tsx
@@ -1141,7 +1141,7 @@ const SewageExcretaRelatedInp = () => {
                             tabKey,
                             searchParamRef.current,
                             ctx,
-                            false,
+                            true,
                             false,
                         );
                     }
@@ -1376,7 +1376,7 @@ const SewageExcretaRelatedInp = () => {
                 tabKey,
                 searchParamRef.current!,
                 lastSearchedValues,
-                false,
+                true,
                 false,
             );
         };
@@ -1650,7 +1650,7 @@ const SewageExcretaRelatedInp = () => {
                     const param =
                         searchParamRef.current ??
                         buildSewageExcretaRelatedSearchParam(lastSearchedValues);
-                    await loadActiveTabData(tabKey, param, lastSearchedValues, false, false);
+                    await loadActiveTabData(tabKey, param, lastSearchedValues, true, false);
                     alert("저장되었습니다.");
                 } else {
                     alert(response.message ?? "저장 중 오류가 발생했습니다.");
diff --git a/apps/st/src/components/statistics/input/SewageExcretaSlurgeInp.tsx b/apps/st/src/components/statistics/input/SewageExcretaSlurgeInp.tsx
index 9244da4f3..885d00f8b 100644
--- a/apps/st/src/components/statistics/input/SewageExcretaSlurgeInp.tsx
+++ b/apps/st/src/components/statistics/input/SewageExcretaSlurgeInp.tsx
@@ -1366,7 +1366,7 @@ const SewageExcretaSlurgeInp = () => {
                 tabKey,
                 searchParamRef.current!,
                 lastSearchedValues,
-                false,
+                true,
                 false,
             );
         };
@@ -1535,7 +1535,7 @@ const SewageExcretaSlurgeInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("제출 취소되었습니다.");
@@ -1731,7 +1731,7 @@ const SewageExcretaSlurgeInp = () => {
                     const param =
                         searchParamRef.current ??
                         buildSewageExcretaSlurgeSearchParam(lastSearchedValues);
-                    await loadActiveTabData(tabKey, param, lastSearchedValues, false, false);
+                    await loadActiveTabData(tabKey, param, lastSearchedValues, true, false);
                     alert("저장되었습니다.");
                 } else {
                     alert(response.message ?? "저장 중 오류가 발생했습니다.");
@@ -2179,7 +2179,7 @@ const SewageExcretaSlurgeInp = () => {
                         activeTabRef.current,
                         searchParamRef.current,
                         values,
-                        false,
+                        true,
                         false,
                     );
                 }}
@@ -2195,7 +2195,7 @@ const SewageExcretaSlurgeInp = () => {
                         activeTabRef.current,
                         searchParamRef.current,
                         values,
-                        false,
+                        true,
                         false,
                     );
                 }}
diff --git a/apps/st/src/components/statistics/input/SewagePipeMaintainInp.tsx b/apps/st/src/components/statistics/input/SewagePipeMaintainInp.tsx
index 35d2480d5..64ea20096 100644
--- a/apps/st/src/components/statistics/input/SewagePipeMaintainInp.tsx
+++ b/apps/st/src/components/statistics/input/SewagePipeMaintainInp.tsx
@@ -622,7 +622,7 @@ const SewagePipeMaintainInp = () => {
                 tabKey,
                 searchParamRef.current!,
                 lastSearchedValues,
-                false,
+                true,
                 false,
             );
         };
@@ -775,7 +775,7 @@ const SewagePipeMaintainInp = () => {
                             RepairStatusInpColumn.tabKey,
                             searchParamRef.current,
                             lastSearchedValues,
-                            false,
+                            true,
                             false,
                         );
                         setGlobalProgress(100);
@@ -812,7 +812,7 @@ const SewagePipeMaintainInp = () => {
                         PipeDredgingStatusInpColumn.tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     setGlobalProgress(100);
@@ -861,7 +861,7 @@ const SewagePipeMaintainInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("제출 취소되었습니다.");
diff --git a/apps/st/src/components/statistics/input/SewageReservoirPumpInp.tsx b/apps/st/src/components/statistics/input/SewageReservoirPumpInp.tsx
index f0ed5b9cd..69e9d946b 100644
--- a/apps/st/src/components/statistics/input/SewageReservoirPumpInp.tsx
+++ b/apps/st/src/components/statistics/input/SewageReservoirPumpInp.tsx
@@ -519,7 +519,7 @@ const SewageReservoirPumpInp = () => {
 
                 if (response.status === "success") {
                     setIsLoading(true);
-                    await loadActiveTabData(tabKey, lastSearchedValues, false, false);
+                    await loadActiveTabData(tabKey, lastSearchedValues, true, false);
                     alert("제출 취소되었습니다.");
                 } else {
                     alert(response.message ?? "제출 취소 중 오류가 발생했습니다.");
@@ -721,7 +721,7 @@ const SewageReservoirPumpInp = () => {
                     } else {
                         setRainfallPumpStationDeleteList([]);
                     }
-                    await loadActiveTabData(tabKey, lastSearchedValues, false, false);
+                    await loadActiveTabData(tabKey, lastSearchedValues, true, false);
                     alert("저장되었습니다.");
                 } else {
                     alert(response.message ?? "저장 중 오류가 발생했습니다.");
@@ -788,7 +788,7 @@ const SewageReservoirPumpInp = () => {
             } else {
                 setRainfallPumpStationDeleteList([]);
             }
-            await loadActiveTabData(tabKey, lastSearchedValues, false, false);
+            await loadActiveTabData(tabKey, lastSearchedValues, true, false);
         };
 
         if (!noApplicable && submitList.length === 0) {
@@ -1670,7 +1670,7 @@ const SewageReservoirPumpInp = () => {
                 onExceptionResetSubmitted={async () => {
                     const values = lastSearchedValues ?? searchValues;
                     if (!values) return;
-                    await loadActiveTabData(activeTabRef.current, values, false, false);
+                    await loadActiveTabData(activeTabRef.current, values, true, false);
                 }}
             />
             <SubmitDailog
@@ -1687,7 +1687,7 @@ const SewageReservoirPumpInp = () => {
                 onExceptionSubmitted={async () => {
                     const values = lastSearchedValues ?? searchValues;
                     if (!values) return;
-                    await loadActiveTabData(activeTabRef.current, values, false, false);
+                    await loadActiveTabData(activeTabRef.current, values, true, false);
                 }}
             />
             <ConfirmDialog isOpen={false} />
diff --git a/apps/st/src/components/statistics/input/SewerageFinanceInp.tsx b/apps/st/src/components/statistics/input/SewerageFinanceInp.tsx
index 6733d0a0b..058eaf784 100644
--- a/apps/st/src/components/statistics/input/SewerageFinanceInp.tsx
+++ b/apps/st/src/components/statistics/input/SewerageFinanceInp.tsx
@@ -757,7 +757,7 @@ const SewerageFinanceInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("제출 취소되었습니다.");
@@ -857,7 +857,7 @@ const SewerageFinanceInp = () => {
                 tabKey,
                 searchParamRef.current!,
                 lastSearchedValues,
-                false,
+                true,
                 false,
             );
         };
@@ -1033,7 +1033,7 @@ const SewerageFinanceInp = () => {
                             tabKey,
                             searchParamRef.current,
                             lastSearchedValues,
-                            false,
+                            true,
                             false,
                         );
                         alert("저장되었습니다.");
@@ -1057,7 +1057,7 @@ const SewerageFinanceInp = () => {
                             tabKey,
                             searchParamRef.current,
                             lastSearchedValues,
-                            false,
+                            true,
                             false,
                         );
                         alert("저장되었습니다.");
@@ -1081,7 +1081,7 @@ const SewerageFinanceInp = () => {
                             tabKey,
                             searchParamRef.current,
                             lastSearchedValues,
-                            false,
+                            true,
                             false,
                         );
                         alert("저장되었습니다.");
@@ -1103,7 +1103,7 @@ const SewerageFinanceInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("저장되었습니다.");
diff --git a/apps/st/src/components/statistics/input/SewerageServiceLevelInp.tsx b/apps/st/src/components/statistics/input/SewerageServiceLevelInp.tsx
index bd1efe8a9..d9b8c46bc 100644
--- a/apps/st/src/components/statistics/input/SewerageServiceLevelInp.tsx
+++ b/apps/st/src/components/statistics/input/SewerageServiceLevelInp.tsx
@@ -755,7 +755,7 @@ const SewerageServiceLevelInp = () => {
                 tabKey,
                 searchParamRef.current!,
                 lastSearchedValues,
-                false,
+                true,
                 false,
             );
         };
@@ -991,7 +991,7 @@ const SewerageServiceLevelInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("제출 취소되었습니다.");
diff --git a/apps/st/src/components/statistics/input/WaterReuseInp.tsx b/apps/st/src/components/statistics/input/WaterReuseInp.tsx
index 8cb416861..a1735f454 100644
--- a/apps/st/src/components/statistics/input/WaterReuseInp.tsx
+++ b/apps/st/src/components/statistics/input/WaterReuseInp.tsx
@@ -1163,7 +1163,7 @@ const WaterReuseInp = () => {
             const param =
                 searchParamRef.current ??
                 buildWaterReuseSearchParam(lastSearchedValues);
-            await loadActiveTabData(tabKey, param, lastSearchedValues, false, false);
+            await loadActiveTabData(tabKey, param, lastSearchedValues, true, false);
         };
 
         try {
@@ -1413,7 +1413,7 @@ const WaterReuseInp = () => {
                     tabKey,
                     param,
                     lastSearchedValues,
-                    false,
+                    true,
                     false,
                 );
             };
@@ -1742,7 +1742,7 @@ const WaterReuseInp = () => {
                     PublicSewageTreatWaterReuseInpColumn.tabKey,
                     param,
                     lastSearchedValues,
-                    false,
+                    true,
                     false,
                 );
                 setGlobalProgress(100);
@@ -1896,7 +1896,7 @@ const WaterReuseInp = () => {
                         tabKey,
                         searchParamRef.current,
                         lastSearchedValues,
-                        false,
+                        true,
                         false,
                     );
                     alert("제출 취소되었습니다.");
diff --git a/apps/st/src/components/statistics/management/PopulationStatusChart.tsx b/apps/st/src/components/statistics/management/PopulationStatusChart.tsx
index 1b7198135..fa0f8ba5b 100644
--- a/apps/st/src/components/statistics/management/PopulationStatusChart.tsx
+++ b/apps/st/src/components/statistics/management/PopulationStatusChart.tsx
@@ -3,7 +3,9 @@ import {
   Chart as ChartJS,
   CategoryScale,
   LinearScale,
+  BarController,
   BarElement,
+  LineController,
   LineElement,
   PointElement,
   Title,
@@ -12,7 +14,18 @@ import {
 } from "chart.js";
 import type { ChartOptions } from "chart.js";
 
-ChartJS.register(CategoryScale, LinearScale, BarElement, LineElement, PointElement, Title, Tooltip, Legend);
+ChartJS.register(
+  CategoryScale,
+  LinearScale,
+  BarController,
+  BarElement,
+  LineController,
+  LineElement,
+  PointElement,
+  Title,
+  Tooltip,
+  Legend,
+);
 
 // 차트 설정 외부 정의 (Mixed 타입 명시)
 const options: ChartOptions<"bar" | "line"> = {