| Place | Post Code |
|---|---|
| Houy Keo, Koup | 12000 |
| Keng, Koup | 12000 |
| Koub, Koup | 12000 |
| Mouang Neua, Koup | 12000 |
| Na Khoun, Koup | 12000 |
| Nam None, Koup | 12000 |
| Or, Koup | 12000 |
| Phon Yeng, Koup | 12000 |
| Tew, Koup | 12000 |
| Yang, Koup | 12000 |
| All postal codes in Kounkham | |
|---|---|
| Gnang, Kounkham | |
| Khounkham, Kounkham | |
| Konglo, Kounkham | |
| Koup, Kounkham | |
| Mouangnamsang, Kounkham | |
| Nakang, Kounkham | |
| Thana, Kounkham | |