| Place | Post Code |
|---|---|
| Hatpang, Hatpang | 06000 |
| Houaykheir, Hatpang | 06000 |
| Houayleir, Hatpang | 06000 |
| Houaymak, Hatpang | 06000 |
| Houaypaen, Hatpang | 06000 |
| Houaysatong, Hatpang | 06000 |
| Houayvai, Hatpang | 06000 |
| Houayyen, Hatpang | 06000 |
| Houyakang, Hatpang | 06000 |
| Khokhan, Hatpang | 06000 |
| Kiet, Hatpang | 06000 |
| Pha-Yong, Hatpang | 06000 |
| Phapuang, Hatpang | 06000 |
| Phavi, Hatpang | 06000 |
| All postal codes in Park Ou | |
|---|---|
| Hatkho, Park Ou | |
| Hatpang, Park Ou | |
| Houay-ot, Park Ou | |
| Nasavang, Park Ou | |
| Pak-Ou, Park Ou | |
| Pakchaek, Park Ou | |
| Phonsavang, Park Ou | |
| Somsanouk, Park Ou | |