| Place | Post Code |
|---|---|
| Chieng, Chieng | 10000 |
| Huaykaeng, Chieng | 10000 |
| Namon, Chieng | 10000 |
| Phokahm, Chieng | 10000 |
| Phonebaeng, Chieng | 10000 |
| Phonemi, Chieng | 10000 |
| Phonethieng, Chieng | 10000 |
| Sisangvon, Chieng | 10000 |
| Viengkham, Chieng | 10000 |
| Xamfon, Chieng | 10000 |
| All postal codes in Kasy | |
|---|---|
| Bouamphouk, Kasy | |
| Chieng, Kasy | |
| Namonmai, Kasy | |
| Phachao, Kasy | |
| Phoukham, Kasy | |
| Pounglak, Kasy | |