| Locality | Post Code |
|---|---|
| Naganokicho (呉市) | 737-0053 |
| Nagasakocho (呉市) | 737-0035 |
| Nagatanicho (呉市) | 737-0871 |
| Nakadori (呉市) | 737-0046 |
| Nigatacho (呉市) | 737-2609, 737-0157 |
| Nigata Hommachi (呉市) | 737-0152 |
| Nigata Minamicho (呉市) | 737-0156 |
| Nigata Miyagamicho (呉市) | 737-0146 |
| Nigata Nakasujicho (呉市) | 737-0151 |
| Nigata Nishigamicho (呉市) | 737-0145 |
| Nigata Nishikimachi (呉市) | 737-0155 |
| Nigata Otoshicho (呉市) | 737-0153 |
| Nigata Sambashidori (呉市) | 737-0154 |
| Nikocho (呉市) | 737-0818 |
| Nikokyocho (呉市) | 737-0816 |
| Nishiatagocho (呉市) | 737-0827 |
| Nishichuo (呉市) | 737-0811 |
| Nishihatacho (呉市) | 737-0075 |
| Nishikatayamacho (呉市) | 737-0806 |
| Nishikawaraishicho (呉市) | 737-0825 |
| Nishimitsutacho (呉市) | 737-0812 |
| Nishishikata (呉市) | 737-0074 |
| Nishishioyacho (呉市) | 737-0838 |
| Nishisozukecho (呉市) | 737-0062 |
| Nishitanicho (呉市) | 737-0064 |
| Nishitatsukawa (呉市) | 737-0809 |