| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Hagimuro, Gunma (萩室) | 378-0111 |
| Postal/ZIP Codes in Kawabayubara, Gunma (川場湯原) | 378-0102 |
| Postal/ZIP Codes in Kotagawa, Gunma (小田川) | 378-0105 |
| Postal/ZIP Codes in Monzen, Gunma (門前) | 378-0115 |
| Postal/ZIP Codes in Nakano, Gunma (中野) | 378-0103 |
| Postal/ZIP Codes in Namashina, Gunma (生品) | 378-0113 |
| Postal/ZIP Codes in Otagawa, Gunma (太田川) | 378-0104 |
| Postal/ZIP Codes in Others, Gunma (その他) | 378-0100 |
| Postal/ZIP Codes in Tatsuiwa, Gunma (立岩) | 378-0112 |
| Postal/ZIP Codes in Tenjin, Gunma (天神) | 378-0114 |
| Postal/ZIP Codes in Yachi, Gunma (谷地) | 378-0101 |