| Place | Post Code |
|---|---|
| Bong, Muangpeu | 07000 |
| Houaysouh, Muangpeu | 07000 |
| Houaytong, Muangpeu | 07000 |
| Huaypheung, Muangpeu | 07000 |
| Mouangper, Muangpeu | 07000 |
| Nakian, Muangpeu | 07000 |
| Pachath, Muangpeu | 07000 |
| Pakha, Muangpeu | 07000 |
| Phiengpho, Muangpeu | 07000 |
| Samsoum, Muangpeu | 07000 |
| Sobphang, Muangpeu | 07000 |
| Vangphaen, Muangpeu | 07000 |
| Vangsoum, Muangpeu | 07000 |
| All postal codes in Xon | |
|---|---|
| Bouamphat, Xon | |
| Muangkao, Xon | |
| Muangpeu, Xon | |
| Xon-nua, Xon | |
| Xon-tai, Xon | |