| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Chihara, Gunma (千原) | 370-2803 |
| Postal/ZIP Codes in Hazawa, Gunma (羽沢) | 370-2814 |
| Postal/ZIP Codes in Hisawa, Gunma (檜沢) | 370-2805 |
| Postal/ZIP Codes in Hoshio, Gunma (星尾) | 370-2816 |
| Postal/ZIP Codes in Iwado, Gunma (磐戸) | 370-2804 |
| Postal/ZIP Codes in Kumakura, Gunma (熊倉) | 370-2815 |
| Postal/ZIP Codes in Mukuruma, Gunma (六車) | 370-2811 |
| Postal/ZIP Codes in Ohinata, Gunma (大日向) | 370-2806 |
| Postal/ZIP Codes in Onita, Gunma (大仁田) | 370-2812 |
| Postal/ZIP Codes in Oshiozawa, Gunma (大塩沢) | 370-2801 |
| Postal/ZIP Codes in Others, Gunma (その他) | 370-2800 |
| Postal/ZIP Codes in Ozawa, Gunma (小沢) | 370-2802 |
| Postal/ZIP Codes in Tozawa, Gunma (砥沢) | 370-2813 |