{ "version": "2026-04-30-real-data-v1", "generatedAt": "2026-04-29T20:54:55.364Z", "prefecture": { "code": "15", "slug": "niigata", "name": "新潟県", "region": "中部", "center": { "lat": 37.90222, "lng": 139.02361, "zoom": 6 } }, "metrics": { "transactionPrice": { "median": 4300000, "average": 12506593, "count": 5214, "unit": "円", "period": "2024", "sourceId": "reinfolib-xit001", "missingReason": null }, "landPrice": { "median": 27900, "average": 37662, "count": 598, "unit": "円/m²", "period": "2026", "sourceId": "reinfolib-xct001", "missingReason": null }, "population": { "latest": 2201272, "year": 2020, "changeRate5y": null, "unit": "人", "sourceId": "estat-population", "missingReason": "2020年国勢調査の都道府県別総人口を掲載。5年増減率は同一表内で算出できる過去年が未確認のため未掲載です。" }, "hazardRisk": { "score": null, "level": "要地域確認", "summary": "新潟県の災害リスクは住所、地形、自治体ハザードマップで判定が変わります。Phase 1では国土数値情報の公式入口を確認し、重い災害GeoJSONの全面同梱は行っていません。", "sourceId": "ksj-hazard", "missingReason": "国土数値情報の災害データは住所単位の確認が必要なため、県別の単一スコアには集約していません。", "indicators": [ { "label": "住所単位確認", "value": "自治体ハザードマップ必須", "sourceId": "ksj-hazard" }, { "label": "Phase 1方針", "value": "巨大GeoJSON同梱なし", "sourceId": "ksj-hazard" } ] } }, "landPrice": { "municipalityRanking": [ { "municipalityCode": "15103", "municipality": "新潟市中央区", "median": 105000, "average": 109405, "count": 44, "lat": 37.908088, "lng": 139.04444 }, { "municipalityCode": "15102", "municipality": "新潟市東区", "median": 73350, "average": 70619, "count": 26, "lat": 37.921681, "lng": 139.102231 }, { "municipalityCode": "15107", "municipality": "新潟市西区", "median": 54400, "average": 58840, "count": 50, "lat": 37.871762, "lng": 138.976109 }, { "municipalityCode": "15104", "municipality": "新潟市江南区", "median": 46250, "average": 43085, "count": 26, "lat": 37.866647, "lng": 139.108965 }, { "municipalityCode": "15202", "municipality": "長岡市", "median": 42300, "average": 37658, "count": 92, "lat": 37.453091, "lng": 138.841435 }, { "municipalityCode": "15213", "municipality": "燕市", "median": 34450, "average": 29557, "count": 14, "lat": 37.662796, "lng": 138.888727 }, { "municipalityCode": "15101", "municipality": "新潟市北区", "median": 34050, "average": 31742, "count": 20, "lat": 37.924809, "lng": 139.196328 }, { "municipalityCode": "15204", "municipality": "三条市", "median": 32900, "average": 29786, "count": 14, "lat": 37.622222, "lng": 138.949371 }, { "municipalityCode": "15208", "municipality": "小千谷市", "median": 29050, "average": 29025, "count": 4, "lat": 37.310694, "lng": 138.798625 }, { "municipalityCode": "15205", "municipality": "柏崎市", "median": 27100, "average": 27670, "count": 10, "lat": 37.369758, "lng": 138.554918 }, { "municipalityCode": "15106", "municipality": "新潟市南区", "median": 26350, "average": 28617, "count": 6, "lat": 37.760358, "lng": 139.029864 }, { "municipalityCode": "15222", "municipality": "上越市", "median": 25700, "average": 24870, "count": 68, "lat": 37.142842, "lng": 138.259738 }, { "municipalityCode": "15105", "municipality": "新潟市秋葉区", "median": 25650, "average": 26481, "count": 32, "lat": 37.786791, "lng": 139.115215 }, { "municipalityCode": "15211", "municipality": "見附市", "median": 25000, "average": 25140, "count": 10, "lat": 37.523789, "lng": 138.915791 }, { "municipalityCode": "15108", "municipality": "新潟市西蒲区", "median": 24700, "average": 24290, "count": 10, "lat": 37.763729, "lng": 138.892619 }, { "municipalityCode": "15209", "municipality": "加茂市", "median": 24100, "average": 26033, "count": 6, "lat": 37.658797, "lng": 139.043654 }, { "municipalityCode": "15206", "municipality": "新発田市", "median": 23900, "average": 24871, "count": 28, "lat": 37.943379, "lng": 139.318116 }, { "municipalityCode": "15210", "municipality": "十日町市", "median": 22650, "average": 22538, "count": 8, "lat": 37.147135, "lng": 138.757339 }, { "municipalityCode": "15216", "municipality": "糸魚川市", "median": 22300, "average": 25921, "count": 14, "lat": 37.054844, "lng": 137.892095 }, { "municipalityCode": "15223", "municipality": "阿賀野市", "median": 21450, "average": 18043, "count": 12, "lat": 37.827391, "lng": 139.228762 } ], "points": [ { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 172000, "lat": 37.92256306, "lng": 139.03195028, "address": "水道町２丁目８０８番１７" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 172000, "lat": 37.92256306, "lng": 139.03195028, "address": "水道町２丁目８０８番１７" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 166000, "lat": 37.92557139, "lng": 139.04100639, "address": "中大畑町５５４番" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 165000, "lat": 37.92557139, "lng": 139.04100639, "address": "中大畑町５５４番" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 150000, "lat": 37.90620111, "lng": 139.06766194, "address": "鐙１－９－６" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 150000, "lat": 37.90620111, "lng": 139.06766194, "address": "鐙１－９－６" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 144000, "lat": 37.91432333, "lng": 139.04428417, "address": "川端町１丁目５番１" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 144000, "lat": 37.91432333, "lng": 139.04428417, "address": "川端町１丁目５番１" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 134000, "lat": 37.90766389, "lng": 139.05156111, "address": "天神尾２－１３－１５" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 134000, "lat": 37.90766389, "lng": 139.05156111, "address": "天神尾２－１３－１５" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 131000, "lat": 37.91045722, "lng": 139.01744417, "address": "関屋昭和町２丁目１１１番" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 130000, "lat": 37.91045722, "lng": 139.01744417, "address": "関屋昭和町２丁目１１１番" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 128000, "lat": 37.89742639, "lng": 139.00044639, "address": "青山新町２５番２" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 128000, "lat": 37.89742639, "lng": 139.00044639, "address": "青山新町２５番２" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 126000, "lat": 37.89947306, "lng": 139.039045, "address": "新和４－７－８" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 125000, "lat": 37.89947306, "lng": 139.039045, "address": "新和４－７－８" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 120000, "lat": 37.89367, "lng": 139.00433694, "address": "東青山１丁目１８番９" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 119000, "lat": 37.89367, "lng": 139.00433694, "address": "東青山１丁目１８番９" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 117000, "lat": 37.90217389, "lng": 139.05394194, "address": "堀之内南２－７－１４" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 117000, "lat": 37.90217389, "lng": 139.05394194, "address": "堀之内南２－７－１４" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 117000, "lat": 37.91838139, "lng": 139.0275375, "address": "学校町通３番町５３２２番１２０" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 116000, "lat": 37.91838139, "lng": 139.0275375, "address": "学校町通３番町５３２２番１２０" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 110000, "lat": 37.89492639, "lng": 139.02210417, "address": "網川原１－９－５" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 110000, "lat": 37.89492639, "lng": 139.02210417, "address": "網川原１－９－５" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 106000, "lat": 37.92836694, "lng": 139.03785, "address": "二葉町１丁目８２８番７" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 106000, "lat": 37.92836694, "lng": 139.03785, "address": "二葉町１丁目８２８番７" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 104000, "lat": 37.89820306, "lng": 139.04814306, "address": "和合町３－５－１８" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 103000, "lat": 37.89820306, "lng": 139.04814306, "address": "和合町３－５－１８" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 101000, "lat": 37.88976306, "lng": 139.03695, "address": "女池神明１丁目６番４" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 100000, "lat": 37.88976306, "lng": 139.03695, "address": "女池神明１丁目６番４" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 98600, "lat": 37.89081417, "lng": 139.07372556, "address": "弁天橋通２－２８－５" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 98500, "lat": 37.88731111, "lng": 139.02571, "address": "愛宕２丁目７番６" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 98000, "lat": 37.88731111, "lng": 139.02571, "address": "愛宕２丁目７番６" }, { "municipalityCode": "15103", "municipality": "新潟市中央区", "pricePerSquareMeter": 97700, "lat": 37.89081417, "lng": 139.07372556, "address": "弁天橋通２－２８－５" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 96600, "lat": 37.89585389, "lng": 138.99689806, "address": "青山４－８－４" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 96400, "lat": 37.89585389, "lng": 138.99689806, "address": "青山４－８－４" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 95400, "lat": 37.88930806, "lng": 139.00224889, "address": "小針１－２６－１５" }, { "municipalityCode": "15107", "municipality": "新潟市西区", "pricePerSquareMeter": 94200, "lat": 37.88930806, "lng": 139.00224889, "address": "小針１－２６－１５" }, { "municipalityCode": "15104", "municipality": "新潟市江南区", "pricePerSquareMeter": 94000, "lat": 37.873085, "lng": 139.102025, "address": "西町５－５－２６" }, { "municipalityCode": "15104", "municipality": "新潟市江南区", "pricePerSquareMeter": 92800, "lat": 37.873085, "lng": 139.102025, "address": "西町５－５－２６" } ], "percentiles": { "p25": 17500, "p50": 27900, "p75": 48400 } }, "transactions": { "histogram": [ { "label": "0-1000万円", "min": 0, "max": 10000000, "count": 3568 }, { "label": "1000万-2000万円", "min": 10000000, "max": 20000000, "count": 777 }, { "label": "2000万-3000万円", "min": 20000000, "max": 30000000, "count": 417 }, { "label": "3000万-5000万円", "min": 30000000, "max": 50000000, "count": 283 }, { "label": "5000万-1億円", "min": 50000000, "max": 100000000, "count": 95 }, { "label": "1億円以上", "min": 100000000, "max": null, "count": 74 } ], "municipalitySummary": [ { "municipalityCode": "15103", "municipality": "新潟市中央区", "median": 18000000, "average": 37000163, "count": 492, "lat": null, "lng": null }, { "municipalityCode": "15102", "municipality": "新潟市東区", "median": 15000000, "average": 23267181, "count": 227, "lat": null, "lng": null }, { "municipalityCode": "15104", "municipality": "新潟市江南区", "median": 13000000, "average": 22218896, "count": 163, "lat": null, "lng": null }, { "municipalityCode": "15107", "municipality": "新潟市西区", "median": 11000000, "average": 19249961, "count": 360, "lat": null, "lng": null }, { "municipalityCode": "15105", "municipality": "新潟市秋葉区", "median": 7750000, "average": 10151048, "count": 124, "lat": null, "lng": null }, { "municipalityCode": "15101", "municipality": "新潟市北区", "median": 6500000, "average": 14799019, "count": 107, "lat": null, "lng": null }, { "municipalityCode": "15206", "municipality": "新発田市", "median": 6300000, "average": 10324765, "count": 243, "lat": null, "lng": null }, { "municipalityCode": "15202", "municipality": "長岡市", "median": 6200000, "average": 14387692, "count": 537, "lat": null, "lng": null }, { "municipalityCode": "15213", "municipality": "燕市", "median": 6050000, "average": 9622048, "count": 166, "lat": null, "lng": null }, { "municipalityCode": "15106", "municipality": "新潟市南区", "median": 5700000, "average": 8450460, "count": 87, "lat": null, "lng": null }, { "municipalityCode": "15211", "municipality": "見附市", "median": 5200000, "average": 10561055, "count": 91, "lat": null, "lng": null }, { "municipalityCode": "15204", "municipality": "三条市", "median": 4250000, "average": 10002260, "count": 214, "lat": null, "lng": null }, { "municipalityCode": "15209", "municipality": "加茂市", "median": 4250000, "average": 6807507, "count": 28, "lat": null, "lng": null }, { "municipalityCode": "15461", "municipality": "南魚沼郡湯沢町", "median": 4250000, "average": 7123438, "count": 32, "lat": null, "lng": null }, { "municipalityCode": "15205", "municipality": "柏崎市", "median": 3000000, "average": 7865582, "count": 159, "lat": null, "lng": null }, { "municipalityCode": "15216", "municipality": "糸魚川市", "median": 3000000, "average": 6313931, "count": 72, "lat": null, "lng": null }, { "municipalityCode": "15222", "municipality": "上越市", "median": 2900000, "average": 7444940, "count": 446, "lat": null, "lng": null }, { "municipalityCode": "15307", "municipality": "北蒲原郡聖籠町", "median": 2800000, "average": 23506905, "count": 74, "lat": null, "lng": null }, { "municipalityCode": "15342", "municipality": "西蒲原郡弥彦村", "median": 2300000, "average": 4436818, "count": 22, "lat": null, "lng": null }, { "municipalityCode": "15227", "municipality": "胎内市", "median": 2000000, "average": 3962146, "count": 41, "lat": null, "lng": null } ], "sampleCount": 5214, "percentiles": { "p25": 650000, "p50": 4300000, "p75": 13000000 } }, "populationTrend": [ { "year": 2020, "value": 2201272, "sourceId": "estat-population" } ], "hazardRisk": { "score": null, "level": "要地域確認", "summary": "新潟県の災害リスクは住所、地形、自治体ハザードマップで判定が変わります。Phase 1では国土数値情報の公式入口を確認し、重い災害GeoJSONの全面同梱は行っていません。", "sourceId": "ksj-hazard", "missingReason": "国土数値情報の災害データは住所単位の確認が必要なため、県別の単一スコアには集約していません。", "indicators": [ { "label": "住所単位確認", "value": "自治体ハザードマップ必須", "sourceId": "ksj-hazard" }, { "label": "Phase 1方針", "value": "巨大GeoJSON同梱なし", "sourceId": "ksj-hazard" } ] }, "sources": [ { "id": "reinfolib-xit001", "name": "不動産情報ライブラリ XIT001", "url": "https://www.reinfolib.mlit.go.jp/help/apiManual/xit001/", "retrievedAt": "2026-04-29T20:54:55.364Z", "period": "2024", "notes": "不動産取引価格情報を都道府県別・四半期別に取得し、取引価格を集計しています。" }, { "id": "reinfolib-xct001", "name": "不動産情報ライブラリ XCT001", "url": "https://www.reinfolib.mlit.go.jp/help/apiManual/xct001/", "retrievedAt": "2026-04-29T20:54:55.364Z", "period": "2026", "notes": "地価公示の住宅地データを取得し、1㎡当たり価格を集計しています。" }, { "id": "estat-population", "name": "e-Stat 国勢調査 人口", "url": "https://www.e-stat.go.jp/api/api-info/e-stat-manual3-0", "retrievedAt": "2026-04-29T20:54:55.364Z", "period": "2020", "notes": "getStatsList/getMetaInfoで統計表と次元を確認し、getStatsDataで都道府県別総人口を取得しています。" }, { "id": "ksj-hazard", "name": "国土数値情報", "url": "https://nlftp.mlit.go.jp/ksj/", "retrievedAt": "2026-04-29T20:54:55.364Z", "period": "dataset-specific", "notes": "Phase 1では巨大GeoJSONを同梱せず、公式災害・地理空間データの確認導線と地域確認注意を掲載しています。" }, { "id": "gsi-tiles", "name": "国土地理院 地理院タイル", "url": "https://maps.gsi.go.jp/development/", "retrievedAt": "2026-04-29T20:54:55.364Z", "period": "current", "notes": "MapLibre GL JSの背景地図として標準地図タイルを利用します。" } ], "quality": { "missingReasons": [ "2020年国勢調査の都道府県別総人口を掲載。5年増減率は同一表内で算出できる過去年が未確認のため未掲載です。", "国土数値情報の災害データは住所単位の確認が必要なため、県別の単一スコアには集約していません。" ], "warnings": [ "取引価格は2024年の不動産取引価格情報を集計しており、個別物件の査定額ではありません。", "地価公示は住宅地division=00の1㎡当たり価格を集計しています。", "災害リスクは住所単位で変わるため、自治体ハザードマップで必ず確認してください。" ] }, "ranking": { "landPriceRank": 40, "transactionRank": 39, "populationRank": 15 } }