| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Aioi (合志市) | 861-1101 |
| Postal/ZIP Codes in Fukuhara (合志市) | 861-1116 |
| Postal/ZIP Codes in Kaminosho (合志市) | 861-1111 |
| Postal/ZIP Codes in Kikudomi (合志市) | 861-1112 |
| Postal/ZIP Codes in Miyoshi (合志市) | 861-1104 |
| Postal/ZIP Codes in Nonoshima (合志市) | 861-1103 |
| Postal/ZIP Codes in Others (合志市) | 861-1100 |
| Postal/ZIP Codes in Sakae (合志市) | 861-1113 |
| Postal/ZIP Codes in Suya (合志市) | 861-1102 |
| Postal/ZIP Codes in Takaba (合志市) | 861-1114 |
| Postal/ZIP Codes in Toyoka (合志市) | 861-1115 |
| Postal/ZIP Codes in Wabu (合志市) | 861-1105 |