| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Kasom, Sok | 17000 |
| Postal/ZIP Codes in Khoumkham, Sok | 17000 |
| Postal/ZIP Codes in Lalangyai, Sok | 17000 |
| Postal/ZIP Codes in Mixai, Sok | 17000 |
| Postal/ZIP Codes in Muenhuamouang, Sok | 17000 |
| Postal/ZIP Codes in Sok, Sok | 17000 |
| Postal/ZIP Codes in Xok, Sok | 17000 |