| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Tsukaji (土佐市) | 781-1153 |
| Postal/ZIP Codes in Usachofukushima (土佐市) | 781-1163 |
| Postal/ZIP Codes in Usachoihama (土佐市) | 781-1162 |
| Postal/ZIP Codes in Usachoinoshiri (土佐市) | 781-1164 |
| Postal/ZIP Codes in Usachoryu (土佐市) | 781-1165 |
| Postal/ZIP Codes in Usachousa (土佐市) | 781-1161 |
| Postal/ZIP Codes in Yatsuji (土佐市) | 781-1114 |