| Place | Post Code |
|---|---|
| Banmuang, Sopxay | 07000 |
| Bombe, Sopxay | 07000 |
| Chaerfai, Sopxay | 07000 |
| Houayheua, Sopxay | 07000 |
| Nongkham, Sopxay | 07000 |
| Phienghom, Sopxay | 07000 |
| Phongxai, Sopxay | 07000 |
| Soblong, Sopxay | 07000 |
| Sobxai, Sopxay | 07000 |
| Vangtang, Sopxay | 07000 |
| All postal codes in Xiengkhor | |
|---|---|
| Mouangnam, Xiengkhor | |
| Natong, Xiengkhor | |
| Phiangsa, Xiengkhor | |
| Sommon, Xiengkhor | |
| Sopxay, Xiengkhor | |
| Xiengkho, Xiengkhor | |