| Locality | Postal Code |
|---|---|
| Akihama (かほく市) | 929-1175 |
| Futatsuya (かほく市) | 929-1211 |
| Gakuendai (かほく市) | 929-1210 |
| Gannyo (かほく市) | 929-1206 |
| Hachibuse (かほく市) | 929-1117 |
| Hachino (かほく市) | 929-1202 |
| Hamakita (かほく市) | 929-1174 |
| Kamiyamada (かほく市) | 929-1115 |
| Karugano (かほく市) | 929-1114 |
| Kasashima (かほく市) | 929-1104 |
| Kiya (かほく市) | 929-1111 |
| Kizu (かほく市) | 929-1171 |
| Kurogawa (かほく市) | 929-1203 |
| Matsuhama (かほく市) | 929-1172 |
| Miuchi (かほく市) | 929-1204 |
| Mori (かほく市) | 929-1123 |
| Nagaramachi (かほく市) | 929-1213 |
| Nakanuma (かほく市) | 929-1212 |
| Nanakubo (かほく市) | 929-1122 |
| Natsuguri (かほく市) | 929-1207 |
| Nodera (かほく市) | 929-1201 |
| Osaki (かほく市) | 929-1127 |
| Others (かほく市) | 929-1100 |
| Sashie (かほく市) | 929-1113 |
| Setomachi (かほく市) | 929-1208 |
| Shimoyamada (かほく市) | 929-1116 |