| Locality | Postal Code |
|---|---|
| Komatsudai (羽生市) | 348-0038 |
| Kosuka (羽生市) | 348-0042 |
| Kuwasaki (羽生市) | 348-0043 |
| Machiya (羽生市) | 348-0023 |
| Minami (羽生市) | 348-0053 |
| Minamihanyu (羽生市) | 348-0071 |
| Miroku (羽生市) | 348-0004 |
| Mitakaya (羽生市) | 348-0011 |
| Myo (羽生市) | 348-0002 |
| Nakaiwase (羽生市) | 348-0046 |
| Nakatekobayashi (羽生市) | 348-0021 |
| Nishi (羽生市) | 348-0054 |
| Onuma (羽生市) | 348-0016 |
| Osaki (羽生市) | 348-0062 |
| Others (羽生市) | 348-0000 |
| Shimohanyu (羽生市) | 348-0026 |
| Shimoiwase (羽生市) | 348-0045 |
| Shimokawasaki (羽生市) | 348-0034 |
| Shimomurakimi (羽生市) | 348-0006 |
| Shimoshinden (羽生市) | 348-0048 |
| Shimoshingo (羽生市) | 348-0047 |
| Shimotekobayashi (羽生市) | 348-0022 |
| Sukage (羽生市) | 348-0033 |
| Sunayama (羽生市) | 348-0036 |
| Tsunegi (羽生市) | 348-0003 |
| Tsutsumi (羽生市) | 348-0001 |