| Place | Post Code |
|---|---|
| Kayong, Lak 19 | 16000 |
| Lak 16, Lak 19 | 16000 |
| Lak 19, Lak 19 | 16000 |
| Lak 20, Lak 19 | 16000 |
| Lak 24, Lak 19 | 16000 |
| Lak 25, Lak 19 | 16000 |
| Morphou, Lak 19 | 16000 |
| Nalaat, Lak 19 | 16000 |
| Namphaak, Lak 19 | 16000 |
| Nonesavang, Lak 19 | 16000 |
| Phakpheow, Lak 19 | 16000 |
| Sabong, Lak 19 | 16000 |