| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Others, Tochigi (その他) | 321-3500 |
| Postal/ZIP Codes in Oyama, Tochigi (小山) | 321-3624 |
| Postal/ZIP Codes in Sakanoi, Tochigi (坂井) | 321-3544 |
| Postal/ZIP Codes in Sazarashi, Tochigi (九石) | 321-3542 |
| Postal/ZIP Codes in Sembo, Tochigi (千本) | 321-3547 |
| Postal/ZIP Codes in Shimosugamata, Tochigi (下菅又) | 321-3545 |
| Postal/ZIP Codes in Shioda, Tochigi (塩田) | 321-3565 |
| Postal/ZIP Codes in Takewara, Tochigi (竹原) | 321-3552 |
| Postal/ZIP Codes in Tokorokusa, Tochigi (所草) | 321-3555 |
| Postal/ZIP Codes in Ugoda, Tochigi (烏生田) | 321-3541 |
| Postal/ZIP Codes in Urago, Tochigi (後郷) | 321-3561 |
| Postal/ZIP Codes in Yamauchi, Tochigi (山内) | 321-3701 |