| Locality | Post Code |
|---|---|
| Imazumicho (周南市) | 745-0063 |
| Irifunecho (周南市) | 745-0047 |
| Izumibaracho (周南市) | 745-0833 |
| Jiyugaoka (周南市) | 745-0654 |
| Jogaoka (周南市) | 745-0807 |
| Joson (周南市) | 745-0853 |
| Kaiseicho (周南市) | 746-0006 |
| Kamisakocho (周南市) | 746-0065 |
| Kamitoishicho (周南市) | 745-0817 |
| Kanokami (周南市) | 745-0302 |
| Kanonaka (周南市) | 745-0303 |
| Kanoshimo (周南市) | 745-0304 |
| Kasegawaracho (周南市) | 746-0055 |
| Katsumabara (周南市) | 745-0617 |
| Katsumagaoka (周南市) | 745-0615 |
| Kawabatacho (周南市) | 745-0012 |
| Kawahigashicho (周南市) | 745-0845 |
| Kawakami (周南市) | 745-0855 |
| Kawamagari (周南市) | 745-0852 |
| Kawasaki (周南市) | 746-0001 |
| Kawate (周南市) | 746-0009 |
| Kayo (周南市) | 745-0858 |
| Keimancho (周南市) | 745-0836 |
| Kinancho (周南市) | 745-0007 |
| Kisandori (周南市) | 745-0071 |
| Kitayama (周南市) | 745-0864 |