| Lieu | Code postal |
|---|---|
| Boam Phieng, Longmat-nua | 09000 |
| Ho Kang, Longmat-nua | 09000 |
| Khaivieng, Longmat-nua | 09000 |
| Khong, Longmat-nua | 09000 |
| Namxai, Longmat-nua | 09000 |
| Natoum, Longmat-nua | 09000 |
| Phiang Kob, Longmat-nua | 09000 |
| Phonkham, Longmat-nua | 09000 |
| Samphanxai, Longmat-nua | 09000 |
| Sanphan, Longmat-nua | 09000 |
| Thounngarm, Longmat-nua | 09000 |
| Viengkham, Longmat-nua | 09000 |
| Xieng Koun, Longmat-nua | 09000 |
| Xom, Longmat-nua | 09000 |