| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Akaiwa, Gunma (赤岩) | 370-0503 |
| Postal/ZIP Codes in Akaiwanishi, Gunma (赤岩西) | 370-0506 |
| Postal/ZIP Codes in Fukujima, Gunma (福島) | 370-0501 |
| Postal/ZIP Codes in Kamigoka, Gunma (上五箇) | 370-0726 |
| Postal/ZIP Codes in Kaminakamori, Gunma (上中森) | 370-0725 |
| Postal/ZIP Codes in Kayano, Gunma (萱野) | 370-0722 |
| Postal/ZIP Codes in Kizaki, Gunma (木崎) | 370-0721 |
| Postal/ZIP Codes in Maigi, Gunma (舞木) | 370-0504 |
| Postal/ZIP Codes in Maigihigashi, Gunma (舞木東) | 370-0507 |
| Postal/ZIP Codes in Nabeya, Gunma (鍋谷) | 370-0502 |
| Postal/ZIP Codes in Others, Gunma (その他) | 370-0500 |
| Postal/ZIP Codes in Sedoi, Gunma (瀬戸井) | 370-0727 |
| Postal/ZIP Codes in Shimonakamori, Gunma (下中森) | 370-0724 |
| Postal/ZIP Codes in Shimpukuji, Gunma (新福寺) | 370-0505 |
| Postal/ZIP Codes in Showa, Gunma (昭和) | 370-0723 |