| Place | Post Code |
|---|---|
| Blacanan, Siwalan | 51137 |
| Blimbing Wuluh, Siwalan | 51137 |
| Boyo Teluk, Siwalan | 51137 |
| Depok, Siwalan | 51137 |
| Mejasem, Siwalan | 51137 |
| Pait, Siwalan | 51137 |
| Rembun, Siwalan | 51137 |
| Siwalan, Siwalan | 51137 |
| Tengeng Wetan, Siwalan | 51137 |
| Tengengkulon, Siwalan | 51137 |
| Tunjungsari, Siwalan | 51137 |
| Wonosari, Siwalan | 51137 |
| Yosorejo, Siwalan | 51137 |