| Place | Post Code |
|---|---|
| Houa Na Ma Oun, Namkeolouang | 03000 |
| Houanamkeo, Namkeolouang | 03000 |
| Koum, Namkeolouang | 03000 |
| Namkeo Louang, Namkeolouang | 03000 |
| Namkeo Noy, Namkeolouang | 03000 |
| Namlek, Namkeolouang | 03000 |
| Patoi, Namkeolouang | 03000 |
| Tinthat, Namkeolouang | 03000 |
| Xiengchai, Namkeolouang | 03000 |
| Xiengle, Namkeolouang | 03000 |
| Yanglouang, Namkeolouang | 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 | |