| Postal Code | Area | |
|---|---|---|
| 028-4211 | Kawaguchi (川口) | View |
| 028-4301 | Numakunai (沼宮内) | View |
| 028-4302 | Daibo (大坊) | View |
| 028-4303 | Ekarinai (江刈内) | View |
| 028-4304 | Kodaki (子抱) | View |
| 028-4305 | Kubo (久保) | View |
| 028-4306 | Mido (御堂) | View |
| 028-4307 | Itsukaichi (五日市) | View |
| 028-4421 | Ikkatai (一方井) | View |
| 028-4422 | Bo (坊) | View |
| 028-4423 | Tsuchikawa (土川) | View |
| 028-4424 | Kuroishi (黒石) | View |
| 028-4425 | Hakita (葉木田) | View |
| 028-4426 | Kuronai (黒内) | View |