{
  "version": "2026-04-30-real-data-v1",
  "generatedAt": "2026-04-29T20:54:55.364Z",
  "prefecture": {
    "code": "11",
    "slug": "saitama",
    "name": "埼玉県",
    "region": "関東",
    "center": {
      "lat": 35.85694,
      "lng": 139.64889,
      "zoom": 8
    }
  },
  "metrics": {
    "transactionPrice": {
      "median": 25000000,
      "average": 38308485,
      "count": 15262,
      "unit": "円",
      "period": "2024",
      "sourceId": "reinfolib-xit001",
      "missingReason": null
    },
    "landPrice": {
      "median": 122000,
      "average": 149494,
      "count": 2020,
      "unit": "円/m²",
      "period": "2026",
      "sourceId": "reinfolib-xct001",
      "missingReason": null
    },
    "population": {
      "latest": 7344765,
      "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": "埼玉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": "11107",
        "municipality": "さいたま市浦和区",
        "median": 394000,
        "average": 428725,
        "count": 40,
        "lat": 35.870639,
        "lng": 139.654218
      },
      {
        "municipalityCode": "11223",
        "municipality": "蕨市",
        "median": 331000,
        "average": 325000,
        "count": 12,
        "lat": 35.823955,
        "lng": 139.684648
      },
      {
        "municipalityCode": "11105",
        "municipality": "さいたま市中央区",
        "median": 328500,
        "average": 316679,
        "count": 28,
        "lat": 35.881545,
        "lng": 139.625899
      },
      {
        "municipalityCode": "11224",
        "municipality": "戸田市",
        "median": 312000,
        "average": 312133,
        "count": 30,
        "lat": 35.816162,
        "lng": 139.667113
      },
      {
        "municipalityCode": "11103",
        "municipality": "さいたま市大宮区",
        "median": 303000,
        "average": 358853,
        "count": 34,
        "lat": 35.905805,
        "lng": 139.62528
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "median": 300000,
        "average": 306450,
        "count": 40,
        "lat": 35.850335,
        "lng": 139.659963
      },
      {
        "municipalityCode": "11228",
        "municipality": "志木市",
        "median": 269000,
        "average": 263714,
        "count": 14,
        "lat": 35.832245,
        "lng": 139.57503
      },
      {
        "municipalityCode": "11229",
        "municipality": "和光市",
        "median": 260000,
        "average": 305100,
        "count": 20,
        "lat": 35.787116,
        "lng": 139.617337
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "median": 250000,
        "average": 264708,
        "count": 178,
        "lat": 35.831899,
        "lng": 139.7271
      },
      {
        "municipalityCode": "11227",
        "municipality": "朝霞市",
        "median": 239500,
        "average": 278324,
        "count": 34,
        "lat": 35.805145,
        "lng": 139.591967
      },
      {
        "municipalityCode": "11245",
        "municipality": "ふじみ野市",
        "median": 203500,
        "average": 210125,
        "count": 24,
        "lat": 35.868169,
        "lng": 139.516849
      },
      {
        "municipalityCode": "11230",
        "municipality": "新座市",
        "median": 201000,
        "average": 221000,
        "count": 42,
        "lat": 35.789479,
        "lng": 139.561938
      },
      {
        "municipalityCode": "11109",
        "municipality": "さいたま市緑区",
        "median": 193000,
        "average": 193480,
        "count": 30,
        "lat": 35.876923,
        "lng": 139.696389
      },
      {
        "municipalityCode": "11235",
        "municipality": "富士見市",
        "median": 185000,
        "average": 193881,
        "count": 26,
        "lat": 35.848601,
        "lng": 139.54651
      },
      {
        "municipalityCode": "11102",
        "municipality": "さいたま市北区",
        "median": 181000,
        "average": 195952,
        "count": 42,
        "lat": 35.937744,
        "lng": 139.612521
      },
      {
        "municipalityCode": "11208",
        "municipality": "所沢市",
        "median": 178000,
        "average": 193214,
        "count": 98,
        "lat": 35.796328,
        "lng": 139.459781
      },
      {
        "municipalityCode": "11324",
        "municipality": "三芳町",
        "median": 169500,
        "average": 159850,
        "count": 12,
        "lat": 35.836594,
        "lng": 139.532386
      },
      {
        "municipalityCode": "11106",
        "municipality": "さいたま市桜区",
        "median": 152500,
        "average": 178000,
        "count": 18,
        "lat": 35.862407,
        "lng": 139.618023
      },
      {
        "municipalityCode": "11221",
        "municipality": "草加市",
        "median": 149000,
        "average": 160161,
        "count": 62,
        "lat": 35.833934,
        "lng": 139.799124
      },
      {
        "municipalityCode": "11201",
        "municipality": "川越市",
        "median": 144500,
        "average": 153730,
        "count": 96,
        "lat": 35.909096,
        "lng": 139.472079
      }
    ],
    "points": [
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 1440000,
        "lat": 35.85668583,
        "lng": 139.65386889,
        "address": "高砂２－２－６"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 1440000,
        "lat": 35.85668583,
        "lng": 139.65386889,
        "address": "高砂２－２－６"
      },
      {
        "municipalityCode": "11103",
        "municipality": "さいたま市大宮区",
        "pricePerSquareMeter": 1190000,
        "lat": 35.90252111,
        "lng": 139.62769194,
        "address": "下町１丁目６２番１外"
      },
      {
        "municipalityCode": "11103",
        "municipality": "さいたま市大宮区",
        "pricePerSquareMeter": 1190000,
        "lat": 35.90252111,
        "lng": 139.62769194,
        "address": "下町１丁目６２番１外"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 721000,
        "lat": 35.80647306,
        "lng": 139.72154611,
        "address": "幸町１－３－２４"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 721000,
        "lat": 35.80647306,
        "lng": 139.72154611,
        "address": "幸町１－３－２４"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 635000,
        "lat": 35.85567194,
        "lng": 139.65636694,
        "address": "岸町４－１４－１７"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 635000,
        "lat": 35.85567194,
        "lng": 139.65636694,
        "address": "岸町４－１４－１７"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 590000,
        "lat": 35.85345694,
        "lng": 139.66047806,
        "address": "岸町３－１－１９"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 590000,
        "lat": 35.85345694,
        "lng": 139.66047806,
        "address": "岸町３－１－１９"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 570000,
        "lat": 35.80088694,
        "lng": 139.72349,
        "address": "本町３－８－１２"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 570000,
        "lat": 35.80088694,
        "lng": 139.72349,
        "address": "本町３－８－１２"
      },
      {
        "municipalityCode": "11230",
        "municipality": "新座市",
        "pricePerSquareMeter": 486000,
        "lat": 35.80298694,
        "lng": 139.55889194,
        "address": "野火止５－１－４４"
      },
      {
        "municipalityCode": "11230",
        "municipality": "新座市",
        "pricePerSquareMeter": 486000,
        "lat": 35.80298694,
        "lng": 139.55889194,
        "address": "野火止５－１－４４"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 485000,
        "lat": 35.80706611,
        "lng": 139.72463306,
        "address": "青木１－３－１５"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 485000,
        "lat": 35.80706611,
        "lng": 139.72463306,
        "address": "青木１－３－１５"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 481000,
        "lat": 35.85650611,
        "lng": 139.66217194,
        "address": "前地２－１０－２５"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 480000,
        "lat": 35.85650611,
        "lng": 139.66217194,
        "address": "前地２－１０－２５"
      },
      {
        "municipalityCode": "11103",
        "municipality": "さいたま市大宮区",
        "pricePerSquareMeter": 476000,
        "lat": 35.90401194,
        "lng": 139.633005,
        "address": "浅間町１丁目１３７番４"
      },
      {
        "municipalityCode": "11103",
        "municipality": "さいたま市大宮区",
        "pricePerSquareMeter": 476000,
        "lat": 35.90401194,
        "lng": 139.633005,
        "address": "浅間町１丁目１３７番４"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 470000,
        "lat": 35.80844444,
        "lng": 139.72066667,
        "address": "中青木１－２－１５"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 469000,
        "lat": 35.80844444,
        "lng": 139.72066667,
        "address": "中青木１－２－１５"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 460000,
        "lat": 35.80001722,
        "lng": 139.71091611,
        "address": "飯塚３－９－７"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 460000,
        "lat": 35.80001722,
        "lng": 139.71091611,
        "address": "飯塚３－９－７"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 456000,
        "lat": 35.80257111,
        "lng": 139.72963389,
        "address": "栄町１－１９－２３"
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "pricePerSquareMeter": 455000,
        "lat": 35.80257111,
        "lng": 139.72963389,
        "address": "栄町１－１９－２３"
      },
      {
        "municipalityCode": "11105",
        "municipality": "さいたま市中央区",
        "pricePerSquareMeter": 453000,
        "lat": 35.90096806,
        "lng": 139.62426194,
        "address": "上落合９－１０－２０"
      },
      {
        "municipalityCode": "11105",
        "municipality": "さいたま市中央区",
        "pricePerSquareMeter": 451000,
        "lat": 35.90096806,
        "lng": 139.62426194,
        "address": "上落合９－１０－２０"
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "pricePerSquareMeter": 448000,
        "lat": 35.84172694,
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        "address": "沼影１－１８－１３"
      },
      {
        "municipalityCode": "11229",
        "municipality": "和光市",
        "pricePerSquareMeter": 447000,
        "lat": 35.78571583,
        "lng": 139.6168975,
        "address": "丸山台２－４－４"
      },
      {
        "municipalityCode": "11229",
        "municipality": "和光市",
        "pricePerSquareMeter": 447000,
        "lat": 35.78571583,
        "lng": 139.6168975,
        "address": "丸山台２－４－４"
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "pricePerSquareMeter": 445000,
        "lat": 35.84172694,
        "lng": 139.64569306,
        "address": "沼影１－１８－１３"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 437000,
        "lat": 35.86406083,
        "lng": 139.64428861,
        "address": "常盤７－１６－１７"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 437000,
        "lat": 35.86406083,
        "lng": 139.64428861,
        "address": "常盤７－１６－１７"
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "pricePerSquareMeter": 435000,
        "lat": 35.85376083,
        "lng": 139.648325,
        "address": "別所１－５－７"
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "pricePerSquareMeter": 434000,
        "lat": 35.85376083,
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        "address": "別所１－５－７"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 428000,
        "lat": 35.87511389,
        "lng": 139.64716111,
        "address": "北浦和１－５－１２"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 428000,
        "lat": 35.87511389,
        "lng": 139.64716111,
        "address": "北浦和１－５－１２"
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "pricePerSquareMeter": 427000,
        "lat": 35.85260972,
        "lng": 139.64529472,
        "address": "別所３－２３－１２"
      },
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "pricePerSquareMeter": 426000,
        "lat": 35.85838694,
        "lng": 139.64349889,
        "address": "高砂４－１９－８"
      }
    ],
    "percentiles": {
      "p25": 65000,
      "p50": 122000,
      "p75": 202000
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  },
  "transactions": {
    "histogram": [
      {
        "label": "0-1000万円",
        "min": 0,
        "max": 10000000,
        "count": 3379
      },
      {
        "label": "1000万-2000万円",
        "min": 10000000,
        "max": 20000000,
        "count": 2709
      },
      {
        "label": "2000万-3000万円",
        "min": 20000000,
        "max": 30000000,
        "count": 2622
      },
      {
        "label": "3000万-5000万円",
        "min": 30000000,
        "max": 50000000,
        "count": 3995
      },
      {
        "label": "5000万-1億円",
        "min": 50000000,
        "max": 100000000,
        "count": 1866
      },
      {
        "label": "1億円以上",
        "min": 100000000,
        "max": null,
        "count": 691
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    ],
    "municipalitySummary": [
      {
        "municipalityCode": "11107",
        "municipality": "さいたま市浦和区",
        "median": 51000000,
        "average": 77264085,
        "count": 426,
        "lat": null,
        "lng": null
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      {
        "municipalityCode": "11103",
        "municipality": "さいたま市大宮区",
        "median": 48000000,
        "average": 79616776,
        "count": 304,
        "lat": null,
        "lng": null
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      {
        "municipalityCode": "11105",
        "municipality": "さいたま市中央区",
        "median": 45000000,
        "average": 61351037,
        "count": 241,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11108",
        "municipality": "さいたま市南区",
        "median": 43000000,
        "average": 58690237,
        "count": 379,
        "lat": null,
        "lng": null
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      {
        "municipalityCode": "11229",
        "municipality": "和光市",
        "median": 43000000,
        "average": 56913043,
        "count": 161,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11224",
        "municipality": "戸田市",
        "median": 40000000,
        "average": 75769231,
        "count": 234,
        "lat": null,
        "lng": null
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      {
        "municipalityCode": "11223",
        "municipality": "蕨市",
        "median": 39500000,
        "average": 87483553,
        "count": 152,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11227",
        "municipality": "朝霞市",
        "median": 39000000,
        "average": 51839590,
        "count": 293,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11109",
        "municipality": "さいたま市緑区",
        "median": 37000000,
        "average": 43312671,
        "count": 292,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11102",
        "municipality": "さいたま市北区",
        "median": 36000000,
        "average": 46120563,
        "count": 355,
        "lat": null,
        "lng": null
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      {
        "municipalityCode": "11234",
        "municipality": "八潮市",
        "median": 35000000,
        "average": 58775000,
        "count": 184,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11203",
        "municipality": "川口市",
        "median": 34000000,
        "average": 55714844,
        "count": 1253,
        "lat": null,
        "lng": null
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      {
        "municipalityCode": "11221",
        "municipality": "草加市",
        "median": 33000000,
        "average": 44113991,
        "count": 461,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11235",
        "municipality": "富士見市",
        "median": 32500000,
        "average": 46198200,
        "count": 200,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11104",
        "municipality": "さいたま市見沼区",
        "median": 32000000,
        "average": 37718893,
        "count": 307,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11106",
        "municipality": "さいたま市桜区",
        "median": 32000000,
        "average": 40723563,
        "count": 174,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11228",
        "municipality": "志木市",
        "median": 32000000,
        "average": 36258571,
        "count": 140,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11208",
        "municipality": "所沢市",
        "median": 31000000,
        "average": 40285210,
        "count": 666,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11230",
        "municipality": "新座市",
        "median": 31000000,
        "average": 35038655,
        "count": 339,
        "lat": null,
        "lng": null
      },
      {
        "municipalityCode": "11219",
        "municipality": "上尾市",
        "median": 30000000,
        "average": 38472826,
        "count": 460,
        "lat": null,
        "lng": null
      }
    ],
    "sampleCount": 15262,
    "percentiles": {
      "p25": 11000000,
      "p50": 25000000,
      "p75": 41000000
    }
  },
  "populationTrend": [
    {
      "year": 2020,
      "value": 7344765,
      "sourceId": "estat-population"
    }
  ],
  "hazardRisk": {
    "score": null,
    "level": "要地域確認",
    "summary": "埼玉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": 5,
    "transactionRank": 3,
    "populationRank": 5
  }
}