{
  "datasetId": "geoboundaries-gbOpen-JPN-ADM1-9469f09",
  "version": "9469f09",
  "boundaryId": "JPN-ADM1-47310658",
  "year": "2017",
  "retrievedAt": "2026-10-09",
  "source": "geoBoundaries / OpenStreetMap contributors / Wambacher",
  "sourceUrl": "https://media.githubusercontent.com/media/wmgeolab/geoBoundaries/9469f09/releaseData/gbOpen/JPN/ADM1/geoBoundaries-JPN-ADM1_simplified.geojson",
  "license": "ODbL-1.0",
  "licenseUrl": "https://opendatacommons.org/licenses/odbl/1-0/",
  "sha256": "f18eeeb978d992a7147f636642932913731c231f298cb514bf7a3bd41a1aacc0",
  "changes": "Source-simplified geometry unchanged; Japanese display names and game IDs added separately.",
  "prefectures": {
    "JP-01": "北海道",
    "JP-02": "青森県",
    "JP-03": "岩手県",
    "JP-04": "宮城県",
    "JP-05": "秋田県",
    "JP-06": "山形県",
    "JP-07": "福島県",
    "JP-08": "茨城県",
    "JP-09": "栃木県",
    "JP-10": "群馬県",
    "JP-11": "埼玉県",
    "JP-12": "千葉県",
    "JP-13": "東京都",
    "JP-14": "神奈川県",
    "JP-15": "新潟県",
    "JP-16": "富山県",
    "JP-17": "石川県",
    "JP-18": "福井県",
    "JP-19": "山梨県",
    "JP-20": "長野県",
    "JP-21": "岐阜県",
    "JP-22": "静岡県",
    "JP-23": "愛知県",
    "JP-24": "三重県",
    "JP-25": "滋賀県",
    "JP-26": "京都府",
    "JP-27": "大阪府",
    "JP-28": "兵庫県",
    "JP-29": "奈良県",
    "JP-30": "和歌山県",
    "JP-31": "鳥取県",
    "JP-32": "島根県",
    "JP-33": "岡山県",
    "JP-34": "広島県",
    "JP-35": "山口県",
    "JP-36": "徳島県",
    "JP-37": "香川県",
    "JP-38": "愛媛県",
    "JP-39": "高知県",
    "JP-40": "福岡県",
    "JP-41": "佐賀県",
    "JP-42": "長崎県",
    "JP-43": "熊本県",
    "JP-44": "大分県",
    "JP-45": "宮崎県",
    "JP-46": "鹿児島県",
    "JP-47": "沖縄県"
  },
  "chunkFiles": [
    "japan-adm1-00.js",
    "japan-adm1-01.js",
    "japan-adm1-02.js",
    "japan-adm1-03.js",
    "japan-adm1-04.js",
    "japan-adm1-05.js",
    "japan-adm1-06.js",
    "japan-adm1-07.js",
    "japan-adm1-08.js",
    "japan-adm1-09.js",
    "japan-adm1-10.js"
  ]
}