Postal Code: 375-0044JIS area code: 10209 with check digit: 102091  | |
| Nishihirai | 西平井 | 
| Fujioka-shi | 藤岡市 | 
| Gunma-ken (aka: Gunma, Gunma-ken, Gunmaken)  | 群馬県 | 
*1 JIS area code is identification code for cities,towns and villages. Maintained by JISC - Japanese Industrial Standards Committee.