| Locality | Postal Code |
|---|---|
| Akamatsucho (平戸市) | 859-5384 |
| Akenokawachicho (平戸市) | 859-5122 |
| Ayukawacho (平戸市) | 859-5515 |
| Bogatacho (平戸市) | 859-5143 |
| Budaijicho (平戸市) | 859-5514 |
| Fukagawacho (平戸市) | 859-5374 |
| Funagicho (平戸市) | 859-5521 |
| Furuecho (平戸市) | 859-5145 |
| Haifukucho (平戸市) | 859-5531 |
| Hegonoharacho (平戸市) | 859-5375 |
| Higashinakayamacho (平戸市) | 859-5525 |
| Himosashicho (平戸市) | 859-5361 |
| Hokicho (平戸市) | 859-5366 |
| Iiracho (平戸市) | 859-5382 |
| Ikitsukicho Ichibu (平戸市) | 859-5701 |
| Ikitsukicho Ichibura (平戸市) | 859-5702 |
| Ikitsukicho Minamimen (平戸市) | 859-5706 |
| Ikitsukicho Misaki (平戸市) | 859-5707 |
| Ikitsukicho Satomen (平戸市) | 859-5703 |
| Ikitsukicho Tachiura (平戸市) | 859-5705 |
| Ikitsukicho Yamadamen (平戸市) | 859-5704 |
| Itoyacho (平戸市) | 859-5502 |
| Iwanoecho (平戸市) | 859-5121 |
| Kagamigawacho (平戸市) | 859-5152 |
| Kamiagecho (平戸市) | 859-5524 |
| Kaminakatsuracho (平戸市) | 859-5503 |