| Place | Post Code |
|---|---|
| Kasom, Sok | 17000 |
| Khoumkham, Sok | 17000 |
| Lalangyai, Sok | 17000 |
| Mixai, Sok | 17000 |
| Muenhuamouang, Sok | 17000 |
| Sok, Sok | 17000 |
| Xok, Sok | 17000 |
| All postal codes in Samakkhixay | |
|---|---|
| Hom, Samakkhixay | |
| Lagnao, Samakkhixay | |
| Sok, Samakkhixay | |
| Thetsaban, Samakkhixay | |