| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Oshimamachi (荒尾市) | 864-0051 |
| Postal/ZIP Codes in Others (荒尾市) | 864-0000 |
| Postal/ZIP Codes in Sakurayamamachi (荒尾市) | 864-0022 |
| Postal/ZIP Codes in Shimoide (荒尾市) | 864-0011 |
| Postal/ZIP Codes in Showamachi (荒尾市) | 864-0056 |
| Postal/ZIP Codes in Sumiyoshimachi (荒尾市) | 864-0006 |
| Postal/ZIP Codes in Taishomachi (荒尾市) | 864-0054 |
| Postal/ZIP Codes in Takahama (荒尾市) | 864-0025 |
| Postal/ZIP Codes in Ushinomizu (荒尾市) | 864-0026 |
| Postal/ZIP Codes in Yotsuyamamachi (荒尾市) | 864-0052 |