| Place | Post Code |
|---|---|
| 豊頃佐々田町 (Toyokoro Sasadamachi, Hokkaido) | 089-5231 |
| 牛首別 (Ushishubetsu, Hokkaido) | 089-5304 |
| 湧洞 (Yudo, Hokkaido) | 089-5308 |
| Postal Codes in Nakagawa | |
|---|---|
| Otoineppu (音威子府村) | |
| Toyokoro (豊頃町) | |
| Nakagawa (中川町) | |
| Makubetsu (幕別町) | |
| Ikeda (池田町) | |
| Hombetsu (本別町) | |
| Bifuka (美深町) | |