| Place | Post Code |
|---|---|
| 石名坂 (Ishinazaka, Yamagata) | 999-5208 |
| 川口 (Kawaguchi, Yamagata) | 999-5203 |
| 京塚 (Kyozuka, Yamagata) | 999-5201 |
| 曲川 (Magarigawa, Yamagata) | 999-5206 |
| 向居 (Mukai, Yamagata) | 999-5204 |
| 中渡 (Nakawatari, Yamagata) | 999-5205 |
| 庭月 (Niwazuki, Yamagata) | 999-5207 |
| その他 (Others, Yamagata) | 999-5200 |
| 佐渡 (Sado, Yamagata) | 999-5202 |
| Postal Codes in Mogami | |
|---|---|
| Funagata (舟形町) | |
| Kaneyama (金山町) | |
| Mamurogawa (真室川町) | |
| Mogami (最上町) | |
| Okura (大蔵村) | |
| Sakegawa (鮭川村) | |
| Tozawa (戸沢村) | |