| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Toshichionsen (八幡平市) | 028-7303 |
| Postal/ZIP Codes in Tozawa (八幡平市) | 028-7567 |
| Postal/ZIP Codes in Tsuchizawa (八幡平市) | 028-7513 |
| Postal/ZIP Codes in Tsunagisawa (八幡平市) | 028-7523 |
| Postal/ZIP Codes in Ubakoishi (八幡平市) | 028-7606 |
| Postal/ZIP Codes in Uenoyama (八幡平市) | 028-7531 |
| Postal/ZIP Codes in Umaagesawa (八幡平市) | 028-7655 |
| Postal/ZIP Codes in Unodoriyachi (八幡平市) | 028-7605 |
| Postal/ZIP Codes in Ushiyama (八幡平市) | 028-7602 |
| Postal/ZIP Codes in Ushiyamaguchi (八幡平市) | 028-7604 |
| Postal/ZIP Codes in Utsutanai (八幡平市) | 028-7536 |
| Postal/ZIP Codes in Uwaseki (八幡平市) | 028-7403 |
| Postal/ZIP Codes in Wayashikimichinoe (八幡平市) | 028-7634 |
| Postal/ZIP Codes in Wayashikimichinoshita (八幡平市) | 028-7636 |
| Postal/ZIP Codes in Yachinaka (八幡平市) | 028-7608 |
| Postal/ZIP Codes in Yachita (八幡平市) | 028-7564 |
| Postal/ZIP Codes in Yagami (八幡平市) | 028-7603 |
| Postal/ZIP Codes in Yamagishi (八幡平市) | 028-7512 |
| Postal/ZIP Codes in Yamaguchi (八幡平市) | 028-7522 |
| Postal/ZIP Codes in Yunosawa (八幡平市) | 028-7524 |