| Place | Post Code |
|---|---|
| Boudtaphan, Houaymun | 13000 |
| Houaymeun, Houaymun | 13000 |
| Koudlamphanh, Houaymun | 13000 |
| Koudli, Houaymun | 13000 |
| Maikhok, Houaymun | 13000 |
| Maixe, Houaymun | 13000 |
| Nahindanh, Houaymun | 13000 |
| Naphansi, Houaymun | 13000 |
| Nonghat, Houaymun | 13000 |
| Phouphai, Houaymun | 13000 |