| Locality | Postal Code |
|---|---|
| Sugaya (那珂市) | 311-0105 |
| Sugi (那珂市) | 311-0106 |
| Takenochi (那珂市) | 311-0110 |
| Tasaki (那珂市) | 311-0124 |
| To (那珂市) | 311-0122 |
| Toyobami (那珂市) | 311-0117 |
| Tozaki (那珂市) | 311-0121 |
| Tsuda (那珂市) | 311-0112 |
| Tsutsumi (那珂市) | 311-0104 |
| Urizura (那珂市) | 319-2102 |
| Yokobori (那珂市) | 311-0103 |