| Place | Post Code |
|---|---|
| Boua, Phonthong | 01140 |
| Nadi, Phonthong | 01140 |
| Nanga, Phonthong | 01140 |
| Nongsa, Phonthong | 01140 |
| Phatthana, Phonthong | 01140 |
| Phonthong, Phonthong | 01140 |
| Phosi, Phonthong | 01140 |
| Phoxai, Phonthong | 01140 |
| Sivilai, Phonthong | 01140 |
| Tham, Phonthong | 01140 |
| All postal codes in Naxaithong | |
|---|---|
| Ilai, Naxaithong | |
| Nakha, Naxaithong | |
| Namkiang, Naxaithong | |
| Naxaythong, Naxaithong | |
| Phonthong, Naxaithong | |
| Sikeut, Naxaithong | |