List of All Postal Codes in Iwanai | ||
|---|---|---|
| Postal Code Code | Postal Code Name | Prefecture |
| 045-0000 | Ikanikeisaiganaibaai | Hokkaido Prefecture |
| 045-0001 | Ohama | Hokkaido Prefecture |
| 045-0002 | Higashiyama | Hokkaido Prefecture |
| 045-0003 | Mandai | Hokkaido Prefecture |
| 045-0011 | Sakae | Hokkaido Prefecture |
| 045-0012 | Miyazono | Hokkaido Prefecture |
| 045-0013 | Takadai | Hokkaido Prefecture |
| 045-0021 | Yamato | Hokkaido Prefecture |
| 045-0022 | Kiyozumi | Hokkaido Prefecture |
| 045-0023 | Aioi | Hokkaido Prefecture |
| 045-0024 | Nozuka | Hokkaido Prefecture |
| 045-0025 | Shikishimanai | Hokkaido Prefecture |
| 045-0026 | Misaki | Hokkaido Prefecture |