| Place | Post Code |
|---|---|
| Huaypha, Naxon | 06000 |
| Laan Neua, Naxon | 06000 |
| Laan Tai, Naxon | 06000 |
| Maakkhaeng, Naxon | 06000 |
| Na Oum, Naxon | 06000 |
| Naluang, Naxon | 06000 |
| Naxorn, Naxon | 06000 |
| Nong On, Naxon | 06000 |
| Pounghorn, Naxon | 06000 |
| Poungtong, Naxon | 06000 |
| All postal codes in Phothong | |
|---|---|
| Muanghup, Phothong | |
| Namlouang, Phothong | |
| Naxon, Phothong | |
| Phonthong, Phothong | |
| Thongsi, Phothong | |