{"postcode_type":"office","jis":"10201","old":"371","new":"3718580","prefecture_kana":null,"city_kana":null,"suburb_kana":null,"prefecture":"群馬県","city":"前橋市","suburb":"大手町","street_address":"１−１−１","office":"群馬県警察本部","office_kana":"グンマケンケイサツホンブ","office_roman":"Gummakenkeisatsuhombu","post_type":"office","is_separated_suburb":null,"is_koaza":null,"is_chome":null,"is_include_area":null,"status":null,"reason":null,"prefecture_roman":null,"city_roman":null,"suburb_roman":null,"handling_post_office":"前橋中央","multiple_numbers":"none","created_at":"2026-06-01T07:00:40.000Z","updated_at":"2026-06-01T07:00:40.000Z","url":"https://postcode.teraren.com/postcodes/3718580.json","location":null}