| Place | Post Code |
|---|---|
| Hatkhang, Phonsavang | 06000 |
| Houaychiem, Phonsavang | 06000 |
| Khialuang, Phonsavang | 06000 |
| Leir, Phonsavang | 06000 |
| Luang, Phonsavang | 06000 |
| Nonsavang, Phonsavang | 06000 |
| Phalong, Phonsavang | 06000 |
| Phia, Phonsavang | 06000 |
| Sibounhom, Phonsavang | 06000 |
| Thinchalern, Phonsavang | 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 | |