| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Hanecho Ko (室戸市) | 781-6741 |
| Postal/ZIP Codes in Hanecho Otsu (室戸市) | 781-6742 |
| Postal/ZIP Codes in Kiragawacho Hei (室戸市) | 781-6833 |
| Postal/ZIP Codes in Kiragawacho Ko (室戸市) | 781-6832 |
| Postal/ZIP Codes in Kiragawacho Otsu (室戸市) | 781-6831 |
| Postal/ZIP Codes in Motoko (室戸市) | 781-7107 |
| Postal/ZIP Codes in Moto Otsu (室戸市) | 781-7108 |
| Postal/ZIP Codes in Murotomisakicho (室戸市) | 781-7101 |
| Postal/ZIP Codes in Murotsu (室戸市) | 781-7102 |
| Postal/ZIP Codes in Others (室戸市) | 781-7100 |
| Postal/ZIP Codes in Ryoke (室戸市) | 781-7109 |
| Postal/ZIP Codes in Sakihamacho (室戸市) | 781-7220 |
| Postal/ZIP Codes in Ukitsu (室戸市) | 781-7103 |
| Postal/ZIP Codes in Ukitsu1-Bancho (室戸市) | 781-7104 |
| Postal/ZIP Codes in Ukitsu2-Bancho (室戸市) | 781-7105 |
| Postal/ZIP Codes in Ukitsu3-Bancho (室戸市) | 781-7106 |