| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Huaypha, Naxon | 06000 |
| Postal/ZIP Codes in Laan Neua, Naxon | 06000 |
| Postal/ZIP Codes in Laan Tai, Naxon | 06000 |
| Postal/ZIP Codes in Maakkhaeng, Naxon | 06000 |
| Postal/ZIP Codes in Na Oum, Naxon | 06000 |
| Postal/ZIP Codes in Naluang, Naxon | 06000 |
| Postal/ZIP Codes in Naxorn, Naxon | 06000 |
| Postal/ZIP Codes in Nong On, Naxon | 06000 |
| Postal/ZIP Codes in Pounghorn, Naxon | 06000 |
| Postal/ZIP Codes in Poungtong, Naxon | 06000 |