| Locality | Post Code |
|---|---|
| Jimmachieidan 1-Jodori (東根市) | 999-3735 |
| Jimmachieidan 2-Jodori (東根市) | 999-3734 |
| Jimmachieidan 3-Jodori (東根市) | 999-3733 |
| Jimmachieidan Minamidori (東根市) | 999-3736 |
| Jimmachieidan Nakadori (東根市) | 999-3732 |
| Jimmachieidan Odori (東根市) | 999-3731 |
| Jimmachi Higashi (東根市) | 999-3764 |
| Jimmachi Kita (東根市) | 999-3762 |
| Jimmachi Minami (東根市) | 999-3765 |
| Jimmachi Nishi (東根市) | 999-3766 |
| Kanisawa (東根市) | 999-3716 |
| Kannonji (東根市) | 999-3723 |
| Kashiwabara (東根市) | 999-3770 |
| Kobayashi (東根市) | 999-3710 |
| Koriyama (東根市) | 999-3774 |
| Matsuzawa (東根市) | 999-3772 |
| Mikkamachi (東根市) | 999-3706 |
| Miyazaki (東根市) | 999-3705 |
| Nagatoro (東根市) | 999-3771 |
| Nakajima Dori (東根市) | 999-3742 |
| Nakajima Higashidori (東根市) | 999-3741 |
| Nakajima Shinden (東根市) | 999-3743 |
| Nikuchi (東根市) | 999-3777 |
| Noda (東根市) | 999-3775 |
| Nogawa (東根市) | 999-3727 |
| Numazawa (東根市) | 999-3725 |