| Place | Post Code |
|---|---|
| Banngew, Chomthong | 11000 |
| Chormthong, Chomthong | 11000 |
| Hinlakfai, Chomthong | 11000 |
| Lakkham, Chomthong | 11000 |
| Mouangmuan, Chomthong | 11000 |
| Namxork, Chomthong | 11000 |
| Phadao, Chomthong | 11000 |
| Sonekhon, Chomthong | 11000 |
| Vangmou, Chomthong | 11000 |
| Vangphae, Chomthong | 11000 |
| Vieng, Chomthong | 11000 |
| All postal codes in Viengthong | |
|---|---|
| Chomthong, Viengthong | |
| Namuang, Viengthong | |
| Naxouang, Viengthong | |
| Phathong, Viengthong | |
| Thadua, Viengthong | |
| Thongmixai, Viengthong | |