| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Hattari, Hokkaido (発足) | 045-0122 |
| Postal/ZIP Codes in Horoni, Hokkaido (幌似) | 045-0121 |
| Postal/ZIP Codes in Kozawa, Hokkaido (小沢) | 048-2142 |
| Postal/ZIP Codes in Kunitomi, Hokkaido (国富) | 048-2143 |
| Postal/ZIP Codes in Maeda, Hokkaido (前田) | 048-2201 |
| Postal/ZIP Codes in Minamihoroni, Hokkaido (南幌似) | 048-2202 |
| Postal/ZIP Codes in Miyaoka, Hokkaido (宮丘) | 045-0123 |
| Postal/ZIP Codes in Oikomi, Hokkaido (老古美) | 045-0032 |
| Postal/ZIP Codes in Others, Hokkaido (その他) | 048-2200 |
| Postal/ZIP Codes in Riyamunai, Hokkaido (梨野舞納) | 045-0031 |
| Postal/ZIP Codes in Waisu, Hokkaido (ワイス) | 048-2141 |
| Postal Codes in Iwanai | |
|---|---|
| Postal/ZIP Codes in Kyowa (共和町) | |
| Postal/ZIP Codes in Iwanai (岩内町) | |