List of All Postal Codes in Koshimizu | ||
|---|---|---|
| Postal Code Code | Postal Code Name | Prefecture |
| 099-3451 | Soei | Hokkaido Prefecture |
| 099-3452 | Hamakoshimizu | Hokkaido Prefecture |
| 099-3453 | Hokuto | Hokkaido Prefecture |
| 099-3454 | Yambetsu | Hokkaido Prefecture |
| 099-3600 | Ikanikeisaiganaibaai | Hokkaido Prefecture |
| 099-3601 | Kayano | Hokkaido Prefecture |
| 099-3602 | Higashino | Hokkaido Prefecture |
| 099-3603 | Izumi | Hokkaido Prefecture |
| 099-3604 | Mizukami | Hokkaido Prefecture |
| 099-3605 | Mokotoyama | Hokkaido Prefecture |
| 099-3611 | Kamitoku | Hokkaido Prefecture |
| 099-3612 | Kyowa | Hokkaido Prefecture |
| 099-3614 | Miwa | Hokkaido Prefecture |
| 099-3615 | Nakasato | Hokkaido Prefecture |
| 099-3616 | Asahi | Hokkaido Prefecture |
| 099-3641 | Motomachi | Hokkaido Prefecture |
| 099-3642 | Minamimachi | Hokkaido Prefecture |