| Locality | Postal Code |
|---|---|
| Others (宇城市) | 869-0500 |
| Shiranuhimachi Eino (宇城市) | 869-3471 |
| Shiranuhimachi Goryo (宇城市) | 869-0551 |
| Shiranuhimachi Kamematsu (宇城市) | 869-0561 |
| Shiranuhimachi Kashiwahara (宇城市) | 869-0554 |
| Shiranuhimachi Kora (宇城市) | 869-0552 |
| Shiranuhimachi Kosobu (宇城市) | 869-0553 |
| Shiranuhimachi Matsuai (宇城市) | 869-3472 |
| Shiranuhimachi Nagasaki (宇城市) | 869-0562 |
| Shiranuhimachi Omi (宇城市) | 869-3473 |
| Shiranuhimachi Uragami (宇城市) | 869-0563 |
| Toyonomachi Itoishi (宇城市) | 861-4301 |
| Toyonomachi Kamigo (宇城市) | 861-4303 |
| Toyonomachi Nakama (宇城市) | 861-4302 |
| Toyonomachi Shimogo (宇城市) | 861-4304 |
| Toyonomachi Subayashi (宇城市) | 861-4307 |
| Toyonomachi Yamasaki (宇城市) | 861-4305 |
| Toyonomachi Yasumi (宇城市) | 861-4306 |