| Locality | Post Code |
|---|---|
| Akimachi Asaku (国東市) | 873-0351 |
| Akimachi Baba (国東市) | 873-0211 |
| Akimachi Futago (国東市) | 873-0356 |
| Akimachi Itonaga (国東市) | 873-0354 |
| Akimachi Kakehi (国東市) | 873-0205 |
| Akimachi Koyodai (国東市) | 873-0232 |
| Akimachi Meiji (国東市) | 873-0352 |
| Akimachi Nakasono (国東市) | 873-0203 |
| Akimachi Narihisa (国東市) | 873-0204 |
| Akimachi Nishimoto (国東市) | 873-0221 |
| Akimachi Osoe (国東市) | 873-0223 |
| Akimachi Sedota (国東市) | 873-0202 |
| Akimachi Shimobaru (国東市) | 873-0231 |
| Akimachi Shimoyamaguchi (国東市) | 873-0222 |
| Akimachi Shioya (国東市) | 873-0212 |
| Akimachi Tomikiyo (国東市) | 873-0355 |
| Akimachi Yagawa (国東市) | 873-0053, 873-0353 |
| Akimachi Yamaguchi (国東市) | 873-0224 |
| Akimachi Yamaura (国東市) | 873-0206 |
| Akimachi Yoshimatsu (国東市) | 873-0201 |
| Akimachi Yurugi (国東市) | 873-0207 |
| Kunimimachi Akane (国東市) | 872-1405 |
| Kunimimachi Imi (国東市) | 872-1401 |
| Kunimimachi Kibe (国東市) | 872-1614 |
| Kunimimachi Kiko (国東市) | 872-1323 |
| Kunimimachi Kokumage (国東市) | 872-1613 |