| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Akesato, Hokkaido (明里) | 078-4432 |
| Postal/ZIP Codes in Ariake, Hokkaido (有明) | 078-4411 |
| Postal/ZIP Codes in Chiyoda, Hokkaido (千代田) | 078-4422 |
| Postal/ZIP Codes in Kyosei, Hokkaido (共成) | 078-4433 |
| Postal/ZIP Codes in Others, Hokkaido (その他) | 078-4400 |
| Postal/ZIP Codes in Sakae, Hokkaido (栄) | 078-4412 |
| Postal/ZIP Codes in Shosambetsu, Hokkaido (初山別) | 078-4421 |
| Postal/ZIP Codes in Toyosaki, Hokkaido (豊岬) | 078-4431 |
| Postal Codes in Tomamae | |
|---|---|
| Postal/ZIP Codes in Shosambetsu (初山別村) | |
| Postal/ZIP Codes in Tomamae (苫前町) | |
| Postal/ZIP Codes in Haboro (羽幌町) | |