| Locality | Postal Code |
|---|---|
| Fukuda (那珂市) | 311-0118 |
| Godai (那珂市) | 311-0111 |
| Higashikinokura (那珂市) | 311-0114 |
| Hirano (那珂市) | 319-2104 |
| Iida (那珂市) | 311-0134 |
| Kadobe (那珂市) | 311-0136 |
| Kamigachi (那珂市) | 311-0116 |
| Kamikunii (那珂市) | 311-0123 |
| Kashima (那珂市) | 311-0135 |
| Kitasakaide (那珂市) | 311-0131 |
| Konosu (那珂市) | 311-0133 |
| Kotoku (那珂市) | 319-2105 |
| Minamisakaide (那珂市) | 311-0132 |
| Motokomezaki (那珂市) | 311-0101 |
| Mukoyama (那珂市) | 311-0102 |
| Nakadai (那珂市) | 311-0113 |
| Nakazato (那珂市) | 319-2103 |
| Nishikinokura (那珂市) | 311-0115 |
| Nukadahigashigo (那珂市) | 311-0109 |
| Nukadakitago (那珂市) | 311-0108 |
| Nukadaminamigo (那珂市) | 311-0107 |
| Others (那珂市) | 311-0100 |
| Ouchi (那珂市) | 311-0125 |
| Shimoedo (那珂市) | 311-0126 |
| Shimooga (那珂市) | 319-2107 |
| Shizu (那珂市) | 319-2106 |