| Locality | Postal Code |
|---|---|
| Ashizawa (尾花沢市) | 999-4554 |
| Dokusawa (尾花沢市) | 999-4555 |
| Fumotomachi (尾花沢市) | 999-4232 |
| Ginzanshinhata (尾花沢市) | 999-4333 |
| Gobono (尾花沢市) | 999-4214 |
| Harada (尾花沢市) | 999-4335 |
| Hatasawa (尾花沢市) | 999-4445 |
| Hosono (尾花沢市) | 999-4444 |
| Ichinono (尾花沢市) | 999-4208 |
| Isazawa (尾花沢市) | 999-4223 |
| Iwayasawa (尾花沢市) | 999-4207 |
| Kaminohata (尾花沢市) | 999-4304, 999-4204 |
| Kamiyanagiwatarido (尾花沢市) | 999-4332 |
| Kammachi (尾花沢市) | 999-4228 |
| Kitago (尾花沢市) | 999-4336 |
| Kitamachi (尾花沢市) | 999-4231 |
| Minamisawa (尾花沢市) | 999-4557 |
| Motai (尾花沢市) | 999-4331 |
| Nakajima (尾花沢市) | 999-4203 |
| Nakamachi (尾花沢市) | 999-4227 |
| Nakisawa (尾花沢市) | 999-4556 |
| Namesawa (尾花沢市) | 999-4202 |
| Nitobukuro (尾花沢市) | 999-4212 |
| Nobesawa (尾花沢市) | 999-4441 |
| Nokurosawa (尾花沢市) | 999-4553 |
| Nyu (尾花沢市) | 999-4213 |