| Locality | Post Code |
|---|---|
| Komoishi (山形市) | 990-2234 |
| Konan (山形市) | 990-0863 |
| Konidamachi (山形市) | 990-0035 |
| Koshomachi (山形市) | 990-0032 |
| Kotobukicho (山形市) | 990-2414 |
| Kubota (山形市) | 990-2482 |
| Kunugizawanishi (山形市) | 990-0850 |
| Kurosawa (山形市) | 990-2311 |
| Maeakashi (山形市) | 990-2352 |
| Maetamachi (山形市) | 990-2411 |
| Mamigasaki (山形市) | 990-0810 |
| Matsubara (山形市) | 990-2313 |
| Matsuei (山形市) | 990-2473 |
| Matsumicho (山形市) | 990-2431 |
| Matsunami (山形市) | 990-0023 |
| Matsuyama (山形市) | 990-2412 |
| Midoricho (山形市) | 990-0041 |
| Miharashinoka (山形市) | 990-2317 |
| Mihatacho (山形市) | 990-2493 |
| Mikkamachi (山形市) | 990-0036 |
| Minami 1-Bancho (山形市) | 990-2441 |
| Minami 2-Bancho (山形市) | 990-2442 |
| Minami 3-Bancho (山形市) | 990-2443 |
| Minami 4-Bancho (山形市) | 990-2444 |
| Minamidate (山形市) | 990-2461 |
| Minamidatenishi (山形市) | 990-2465 |