| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Tsuchiya, Ibaraki (土屋) | 300-0426 |
| Postal/ZIP Codes in Ukeryo, Ibaraki (受領) | 300-0424 |
| Postal/ZIP Codes in Ushigome, Ibaraki (牛込) | 300-0409 |
| Postal/ZIP Codes in Yaita, Ibaraki (八井田) | 300-0407 |
| Postal/ZIP Codes in Yamauchi, Ibaraki (山内) | 300-0406 |
| Postal/ZIP Codes in Yanaka, Ibaraki (谷中) | 300-0417 |
| Postal Codes in Inashiki | |
|---|---|
| Postal/ZIP Codes in Ami (阿見町) | |
| Postal/ZIP Codes in Kawachi (河内町) | |
| Postal/ZIP Codes in Miho (美浦村) | |