| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Toyohama, Hokkaido (豊浜) | 098-5703 |
| Postal/ZIP Codes in Toyokambetsu, Hokkaido (豊寒別) | 098-5702 |
| Postal/ZIP Codes in Toyoshi, Hokkaido (豊牛) | 098-5702 |
| Postal/ZIP Codes in Usotan, Hokkaido (宇曽丹) | 098-5744 |
| Postal/ZIP Codes in Utsunai, Hokkaido (宇津内) | 098-5754 |
| Postal/ZIP Codes in Yamagaru, Hokkaido (山軽) | 098-5761 |
| Postal/ZIP Codes in Yasubetsu, Hokkaido (安別) | 098-5764 |