List of All Postal Codes in Oumu | ||
|---|---|---|
| Postal Code Code | Postal Code Name | Prefecture |
| 098-1700 | Ikanikeisaiganaibaai | Hokkaido Prefecture |
| 098-1701 | Kitaomu | Hokkaido Prefecture |
| 098-1702 | Omu | Hokkaido Prefecture |
| 098-1703 | Sawaki | Hokkaido Prefecture |
| 098-1704 | Kamisawaki | Hokkaido Prefecture |
| 098-1705 | Minamiomu | Hokkaido Prefecture |
| 098-1706 | Nakaomu | Hokkaido Prefecture |
| 098-1707 | Kamiomu | Hokkaido Prefecture |
| 098-1708 | Kamihoronai | Hokkaido Prefecture |
| 098-1821 | Kitahoronai | Hokkaido Prefecture |
| 098-5955 | Otoshibe | Hokkaido Prefecture |