| Place | Postal Code |
|---|---|
| 古口 (Furukuchi, Yamagata) | 999-6401, 999-6801 |
| 岩清水 (Iwashimizu, Yamagata) | 999-6312 |
| 神田 (Jinden, Yamagata) | 999-6315 |
| 蔵岡 (Kuraoka, Yamagata) | 999-6402 |
| 松坂 (Matsuzaka, Yamagata) | 999-6314 |
| 名高 (Nadaka, Yamagata) | 999-6313 |
| その他 (Others, Yamagata) | 999-6400 |
| 角川 (Tsunokawa, Yamagata) | 999-6403 |
| 津谷 (Tsuya, Yamagata) | 999-6311 |
| 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) | |