| Place | Post Code |
|---|---|
| Banphone, Khammouan | 11000 |
| Dongbang, Khammouan | 11000 |
| Dornxat, Khammouan | 11000 |
| Houaykeo, Khammouan | 11000 |
| Khammuane, Khammouan | 11000 |
| Nadeua, Khammouan | 11000 |
| Nakang, Khammouan | 11000 |
| Nonghin, Khammouan | 11000 |
| Phayath, Khammouan | 11000 |
| Phonethong, Khammouan | 11000 |
| Pungphan, Khammouan | 11000 |
| Senkhoun, Khammouan | 11000 |
| Sobphak, Khammouan | 11000 |
| Sobphuane, Khammouan | 11000 |
| Tonsan, Khammouan | 11000 |
| All postal codes in Khamkeuth | |
|---|---|
| Khammouan, Khamkeuth | |
| Nong-o, Khamkeuth | |
| Nongkok, Khamkeuth | |
| Phontan, Khamkeuth | |
| Thavaeng, Khamkeuth | |
| Thongkhe, Khamkeuth | |
| Thongsaen, Khamkeuth | |