| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Chaphi, Namgnon | 05000 |
| Postal/ZIP Codes in Lao Luang, Namgnon | 05000 |
| Postal/ZIP Codes in Namyorn Kao, Namgnon | 05000 |
| Postal/ZIP Codes in Namyorn Mai, Namgnon | 05000 |
| Postal/ZIP Codes in Pana, Namgnon | 05000 |
| Postal/ZIP Codes in Phouphadaeng, Namgnon | 05000 |
| Postal/ZIP Codes in Phouxai, Namgnon | 05000 |