| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Duane, Kasok | 13000 |
| Postal/ZIP Codes in Kasok Nuea, Kasok | 13000 |
| Postal/ZIP Codes in Kasok Tai, Kasok | 13000 |
| Postal/ZIP Codes in Namouang, Kasok | 13000 |
| Postal/ZIP Codes in Nongpheu, Kasok | 13000 |
| Postal/ZIP Codes in Xienglekhok, Kasok | 13000 |
| Postal/ZIP Codes in Xienglenam, Kasok | 13000 |