| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Aikai, Yamagata (合海) | 996-0211 |
| Postal/ZIP Codes in Akamatsu, Yamagata (赤松) | 996-0213 |
| Postal/ZIP Codes in Minamiyama, Yamagata (南山) | 996-0201 |
| Postal/ZIP Codes in Others, Yamagata (その他) | 996-0200 |
| Postal/ZIP Codes in Shimizu, Yamagata (清水) | 996-0212 |