| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Ezuka, Iwate (狄塚) | 028-6223 |
| Postal/ZIP Codes in Hareyama, Iwate (晴山) | 028-6221 |
| Postal/ZIP Codes in Hebikuchi, Iwate (蛇口) | 028-6412 |
| Postal/ZIP Codes in Kamidate, Iwate (上舘) | 028-6301 |
| Postal/ZIP Codes in Karumai, Iwate (軽米) | 028-6302 |
| Postal/ZIP Codes in Kokarumai, Iwate (小軽米) | 028-6411 |
| Postal/ZIP Codes in Koke, Iwate (高家) | 028-6303 |
| Postal/ZIP Codes in Maruko, Iwate (円子) | 028-6413 |
| Postal/ZIP Codes in Nagakura, Iwate (長倉) | 028-6304 |
| Postal/ZIP Codes in Others, Iwate (その他) | 028-6300 |
| Postal/ZIP Codes in Sannai, Iwate (山内) | 028-6222 |