| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Namino Shinnamino (阿蘇市) | 869-2807 |
| Postal/ZIP Codes in Namino Shochino (阿蘇市) | 869-2801 |
| Postal/ZIP Codes in Namino Takimizu (阿蘇市) | 869-2804 |
| Postal/ZIP Codes in Nishikozono (阿蘇市) | 869-2303 |
| Postal/ZIP Codes in Nishimachi (阿蘇市) | 869-2222 |
| Postal/ZIP Codes in Nishiyunora (阿蘇市) | 869-2304 |
| Postal/ZIP Codes in Okura (阿蘇市) | 869-2312 |
| Postal/ZIP Codes in Onoda (阿蘇市) | 869-2314 |
| Postal/ZIP Codes in Others (阿蘇市) | 869-2600 |
| Postal/ZIP Codes in Otohime (阿蘇市) | 869-2226 |
| Postal/ZIP Codes in Ozato (阿蘇市) | 869-2307 |
| Postal/ZIP Codes in Takawara (阿蘇市) | 869-2223 |
| Postal/ZIP Codes in Uchinomaki (阿蘇市) | 869-2301 |
| Postal/ZIP Codes in Yakuimbaru (阿蘇市) | 869-2221 |
| Postal/ZIP Codes in Yamada (阿蘇市) | 869-2313, 869-2413 |
| Postal/ZIP Codes in Yunora (阿蘇市) | 869-2305 |