| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Kikugawacho Mominoki (下関市) | 750-0303 |
| Postal/ZIP Codes in Kikugawacho Nanami (下関市) | 750-0315 |
| Postal/ZIP Codes in Kikugawacho Narazaki (下関市) | 750-0322 |
| Postal/ZIP Codes in Kikugawacho Nishinakayama (下関市) | 750-0301 |
| Postal/ZIP Codes in Kikugawacho Nisshin (下関市) | 750-0323 |
| Postal/ZIP Codes in Kikugawacho Shimohoki (下関市) | 750-0306 |
| Postal/ZIP Codes in Kikugawacho Shimokaeda (下関市) | 750-0317 |
| Postal/ZIP Codes in Kikugawacho Shimoono (下関市) | 750-0312 |
| Postal/ZIP Codes in Kikugawacho Tabe (下関市) | 750-0313 |
| Postal/ZIP Codes in Kikugawacho Yoshika (下関市) | 750-0316 |
| Postal/ZIP Codes in Kiyosue (下関市) | 750-1151 |
| Postal/ZIP Codes in Kiyosue Daimon (下関市) | 750-1164 |
| Postal/ZIP Codes in Kiyosue Gomo (下関市) | 750-1162 |
| Postal/ZIP Codes in Kiyosue Higashimachi (下関市) | 750-1156 |
| Postal/ZIP Codes in Kiyosue Hommachi (下関市) | 750-1154 |
| Postal/ZIP Codes in Kiyosue Jinya (下関市) | 750-1152 |
| Postal/ZIP Codes in Kiyosue Kurama (下関市) | 750-1153 |
| Postal/ZIP Codes in Kiyosue Nakamachi (下関市) | 750-1155 |