| Place | Post Code |
|---|---|
| Nakham, Nakham | 03000 |
| Nongboua, Nakham | 03000 |
| Nongkham, Nakham | 03000 |
| Simoun, Nakham | 03000 |
| Xo, Nakham | 03000 |
| All postal codes in Sing | |
|---|---|
| Chiengchai, Sing | |
| Khoang, Sing | |
| Mom, Sing | |
| Nakham, Sing | |
| Namkeolouang, Sing | |
| Oudomsin, Sing | |
| Tapao - Donpoy, Sing | |
| Thongmai, Sing | |
| Xiengkhaeng, Sing | |