| Locality | Post Code |
|---|---|
| Others (山形市) | 990-0000 |
| Ryutsusenta (山形市) | 990-0071 |
| Saiwaicho (山形市) | 990-0038 |
| Sakaebara (山形市) | 990-0077 |
| Sakaidamachi (山形市) | 990-0819 |
| Sakanamachi (山形市) | 990-0824 |
| Sakuracho (山形市) | 990-0045 |
| Sakuradahigashi (山形市) | 990-2323 |
| Sakuradaminami (山形市) | 990-2322 |
| Sakuradanishi (山形市) | 990-2321 |
| Sakuragaoka (山形市) | 990-2376 |
| Sansha (山形市) | 990-0898 |
| Saotome (山形市) | 990-0003 |
| Sekizawa (山形市) | 990-0016 |
| Senami (山形市) | 990-0881 |
| Sengari (山形市) | 990-2216 |
| Sengoku (山形市) | 990-2227 |
| Senjudo (山形市) | 990-2172 |