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