| Place | Post Code |
|---|---|
| Gnangkham Neua, Gnangkham | 13000 |
| Gnangkham Tai, Gnangkham | 13000 |
| Kengherd, Gnangkham | 13000 |
| Khaokat, Gnangkham | 13000 |
| Laodok Mai, Gnangkham | 13000 |
| Laophai, Gnangkham | 13000 |
| Nakha Mai, Gnangkham | 13000 |
| Nasob, Gnangkham | 13000 |
| Phosanh, Gnangkham | 13000 |