| Locality | Post Code |
|---|---|
| Nakao (宇部市) | 755-0073 |
| Nakaube (宇部市) | 755-0086 |
| Nakayama (宇部市) | 755-0058 |
| Nishihirabara (宇部市) | 755-0808 |
| Nishihommachi (宇部市) | 755-0052 |
| Nishikajigaeshi (宇部市) | 755-0037 |
| Nishikibe (宇部市) | 757-0402 |
| Nishikicho (宇部市) | 755-0018 |
| Nishikiwa (宇部市) | 755-0151 |
| Nishikogushi (宇部市) | 755-0049 |
| Nishikotoshiba (宇部市) | 755-0035 |
| Nishimagura (宇部市) | 757-0214 |
| Nishinakacho (宇部市) | 755-0053 |
| Nishiokinoyama (宇部市) | 759-0205 |
| Nishiubekita (宇部市) | 759-0211 |
| Nishiubeminami (宇部市) | 759-0208 |
| Nobara (宇部市) | 755-0024 |
| Nonaka (宇部市) | 755-0025 |
| Norisada (宇部市) | 755-0003 |
| Numa (宇部市) | 755-0085 |
| Nyoiji (宇部市) | 754-1315 |
| Okinodan (宇部市) | 759-0202 |
| Okiube (宇部市) | 755-0001 |
| Okumagura (宇部市) | 757-0213 |
| Ondacho (宇部市) | 755-0023 |
| Ono (宇部市) | 754-1311 |