| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Tonkara, Hokkaido (トンカラ) | 048-1307 |
| Postal/ZIP Codes in Toyokuni, Hokkaido (豊国) | 048-1324 |
| Postal/ZIP Codes in Yodogawa, Hokkaido (淀川) | 048-1306 |
| Postal/ZIP Codes in Yoshikuni, Hokkaido (吉国) | 048-1311 |
| Postal/ZIP Codes in Yunosato, Hokkaido (湯里) | 048-1321 |
| Postal Codes in Isoya | |
|---|---|
| Postal/ZIP Codes in Rankoshi (蘭越町) | |