| Place | Post Code |
|---|---|
| Beungman, Khamthong | 14000 |
| Dornmuang, Khamthong | 14000 |
| Khamthong, Khamthong | 14000 |
| Khok Hin Thong, Khamthong | 14000 |
| Khok Sa Vath, Khamthong | 14000 |
| Muang Kao, Khamthong | 14000 |
| Nonesamlan, Khamthong | 14000 |
| Nongkholou, Khamthong | 14000 |
| Nongteng, Khamthong | 14000 |
| Okat Gnai, Khamthong | 14000 |
| Oudomxai, Khamthong | 14000 |
| Thakhor, Khamthong | 14000 |
| Thalouang, Khamthong | 14000 |
| Thamuang, Khamthong | 14000 |