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