| Place | Post Code |
|---|---|
| Huayxienghin, Thadua | 11000 |
| Khorntao, Thadua | 11000 |
| Kokton, Thadua | 11000 |
| Phalai, Thadua | 11000 |
| Phiengton, Thadua | 11000 |
| Phonhome, Thadua | 11000 |
| Phonmouang, Thadua | 11000 |
| Sobpat (Phokham), Thadua | 11000 |
| Thadeua, Thadua | 11000 |
| All postal codes in Viengthong | |
|---|---|
| Chomthong, Viengthong | |
| Namuang, Viengthong | |
| Naxouang, Viengthong | |
| Phathong, Viengthong | |
| Thadua, Viengthong | |
| Thongmixai, Viengthong | |