| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amasegawa, Akita (天瀬川) | 018-2102 |
| Postal/ZIP Codes in Ashizaki, Akita (芦崎) | 018-2405 |
| Postal/ZIP Codes in Hamada, Akita (浜田) | 018-2407 |
| Postal/ZIP Codes in Kado, Akita (鹿渡) | 018-2104 |
| Postal/ZIP Codes in Kamiiwakawa, Akita (上岩川) | 018-2101 |
| Postal/ZIP Codes in Kawashiri, Akita (川尻) | 018-2402 |
| Postal/ZIP Codes in Koikawa, Akita (鯉川) | 018-2103 |
| Postal/ZIP Codes in Kumeokashinden, Akita (久米岡新田) | 018-2403 |
| Postal/ZIP Codes in Moritake, Akita (森岳) | 018-2303 |
| Postal/ZIP Codes in Okuchi, Akita (大口) | 018-2406 |
| Postal/ZIP Codes in Others, Akita (その他) | 018-2400 |
| Postal/ZIP Codes in Shimoiwakawa, Akita (下岩川) | 018-2302 |
| Postal/ZIP Codes in Shitobashi, Akita (志戸橋) | 018-2301 |
| Postal/ZIP Codes in Sotoka, Akita (外岡) | 018-2305 |
| Postal/ZIP Codes in Tomiokashinden, Akita (富岡新田) | 018-2404 |
| Postal/ZIP Codes in Toyokakinden, Akita (豊岡金田) | 018-2304 |
| Postal/ZIP Codes in Ukawa, Akita (鵜川) | 018-2401 |
| Postal Codes in Yamamoto | |
|---|---|
| Postal/ZIP Codes in Fujisato (藤里町) | |
| Postal/ZIP Codes in Happo (八峰町) | |
| Postal/ZIP Codes in Mitane (三種町) | |