| Place | Post Code |
|---|---|
| Huaymaat, Longnamtan | 06000 |
| Huaytan, Longnamtan | 06000 |
| Mokplai, Longnamtan | 06000 |
| Na, Longnamtan | 06000 |
| Nongkham, Longnamtan | 06000 |
| Peo, Longnamtan | 06000 |
| Phouluangdeum, Longnamtan | 06000 |
| Phoulung Neua, Longnamtan | 06000 |
| Some, Longnamtan | 06000 |