| Place | Post Code |
|---|---|
| Angnamhoum, Ilai | 01140 |
| Chengsawang, Ilai | 01140 |
| Houaynamyen, Ilai | 01140 |
| Houmbeng, Ilai | 01140 |
| I Lai Neua, Ilai | 01140 |
| I Lai Tai, Ilai | 01140 |
| Namhoum, Ilai | 01140 |
| Peuk, Ilai | 01140 |
| Sisawat, Ilai | 01140 |
| Songkhoaukangsen, Ilai | 01140 |
| Songpeuay Neua, Ilai | 01140 |
| Songpeuay Tai, Ilai | 01140 |
| All postal codes in Naxaithong | |
|---|---|
| Ilai, Naxaithong | |
| Nakha, Naxaithong | |
| Namkiang, Naxaithong | |
| Naxaythong, Naxaithong | |
| Phonthong, Naxaithong | |
| Sikeut, Naxaithong | |