| Place | Postal Code |
|---|---|
| 津海木 (Tsunogi, Yamaguchi) | 742-2713 |
| 内入 (Uchinonyu, Yamaguchi) | 742-2515 |
| 浮島 (Ukashima, Yamaguchi) | 742-2801 |
| 和田 (Wada, Yamaguchi) | 742-2516 |
| 和佐 (Wasa, Yamaguchi) | 742-2518 |
| 横見 (Yokomi, Yamaguchi) | 742-2715 |
| 油宇 (Yu, Yamaguchi) | 742-2602 |
| 油良 (Yura, Yamaguchi) | 742-2802 |
| Postal Codes in Oshima | |
|---|---|
| Suooshima (周防大島町) | |