| Place | Post Code |
|---|---|
| Fai, Pakchaek | 06000 |
| Hatxoua, Pakchaek | 06000 |
| Houaykok, Pakchaek | 06000 |
| Houaylouang, Pakchaek | 06000 |
| Latkok, Pakchaek | 06000 |
| Yaklek, Pakchaek | 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 | |