| Place | Post Code |
|---|---|
| 新川 (Shinkawa, Hokkaido) | 088-1526 |
| 新川東 (Shinkawahigashi, Hokkaido) | 088-1527 |
| 新川西 (Shinkawanishi, Hokkaido) | 088-1528 |
| 後静 (Shirishizu, Hokkaido) | 088-1402 |
| 後静村 (Shirishizumura, Hokkaido) | 088-1412 |
| 湯沸 (Tofutsu, Hokkaido) | 088-1522 |
| 羨古丹 (Urayakotan, Hokkaido) | 088-1406 |
| 渡散布 (Watarichirippu, Hokkaido) | 088-1534 |
| 四番沢 (Yobansawa, Hokkaido) | 088-1304 |
| 横浜 (Yokohama, Hokkaido) | 088-1402 |
| 養老散布 (Yorochirippu, Hokkaido) | 088-1535 |
| Postal Codes in Akkeshi | |
|---|---|
| Hamanaka (浜中町) | |
| Akkeshi (厚岸町) | |