| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Akita, Hokkaido (秋田) | 098-5103 |
| Postal/ZIP Codes in Asahidai, Hokkaido (旭台) | 098-5554 |
| Postal/ZIP Codes in Fujii, Hokkaido (藤井) | 098-5563 |
| Postal/ZIP Codes in Heian, Hokkaido (兵安) | 098-5561 |
| Postal/ZIP Codes in Iwate, Hokkaido (岩手) | 098-5101 |
| Postal/ZIP Codes in Kamikoma, Hokkaido (上駒) | 098-5564 |
| Postal/ZIP Codes in Kamitombetsu, Hokkaido (上頓別) | 098-5111 |
| Postal/ZIP Codes in Kanzaki, Hokkaido (神崎) | 098-5562 |
| Postal/ZIP Codes in Kotobuki, Hokkaido (寿) | 098-5552 |
| Postal/ZIP Codes in Matsuneshiri, Hokkaido (松音知) | 098-5565 |
| Postal/ZIP Codes in Nakatombetsu, Hokkaido (中頓別) | 098-5551 |
| Postal/ZIP Codes in Others, Hokkaido (その他) | 098-5500 |
| Postal/ZIP Codes in Pinneshiri, Hokkaido (敏音知) | 098-5113 |
| Postal/ZIP Codes in Shotombetsu, Hokkaido (小頓別) | 098-5102 |
| Postal/ZIP Codes in Toyohira, Hokkaido (豊平) | 098-5112 |
| Postal/ZIP Codes in Toyoizumi, Hokkaido (豊泉) | 098-5555 |
| Postal/ZIP Codes in Yayoi, Hokkaido (弥生) | 098-5553 |