| Place | Post Code |
|---|---|
| Air Jamban, Mandau | 28783 |
| Air Kulim, Mandau | 28784 |
| Babussalam, Mandau | 28783 |
| Balik Alam, Mandau | 28783 |
| Batang Serosa, Mandau | 28783 |
| Bathin Betuah, Mandau | 28783 |
| Bathin Sobanga, Mandau | 28784 |
| Boncah Mahang, Mandau | 28784 |
| Buluh Manis, Mandau | 28784 |
| Duri Barat, Mandau | 28783 |
| Duri Timur, Mandau | 28783 |
| Gajah Sakti, Mandau | 28783 |
| Harapan Baru, Mandau | 28783 |
| Pamesi, Mandau | 28784 |
| Pematang Obo, Mandau | 28784 |
| Pematang Pudu, Mandau | 28783 |
| Sesumbo Ampai, Mandau | 28784 |
| Simpang Padang, Mandau | 28784 |
| Talang Mandi, Mandau | 28783 |
| Tambusai Batang Dui, Mandau | 28784 |