| Locality | Post Code |
|---|---|
| Nanajugari (山形市) | 990-0804 |
| Nanaura (山形市) | 990-2171 |
| Naneicho (山形市) | 990-2445 |
| Nanukamachi (山形市) | 990-0042 |
| Narisawanishi (山形市) | 990-2339 |
| Nariyasu (山形市) | 990-0891 |
| Niida (山形市) | 990-2355 |
| Niiyama (山形市) | 990-0015 |
| Nishiemata (山形市) | 990-0862 |
| Nishigoshi (山形市) | 990-2226 |
| Nishihara (山形市) | 990-0859 |
| Nishikicho (山形市) | 990-0056 |
| Nishimida (山形市) | 990-0844 |
| Nishinakano (山形市) | 990-0893 |
| Nishita (山形市) | 990-0831 |
| Nishizaki (山形市) | 990-0853 |
| Numagi (山形市) | 990-2474 |
| Numanobemachi (山形市) | 990-0007 |
| Ochiaimachi (山形市) | 990-0075 |
| Odachi (山形市) | 990-2402 |
| Okimachi (山形市) | 990-0818 |
| Omichibata (山形市) | 990-2344 |
| Omori (山形市) | 990-2231 |
| Omotezao (山形市) | 990-2307 |
| Otemachi (山形市) | 990-0046 |
| Otesaku (山形市) | 990-2365 |