| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Houaymok, Nahong | 04000 |
| Postal/ZIP Codes in Houaysoum, Nahong | 04000 |
| Postal/ZIP Codes in Khonken, Nahong | 04000 |
| Postal/ZIP Codes in Moksalam, Nahong | 04000 |
| Postal/ZIP Codes in Nahouang, Nahong | 04000 |
| Postal/ZIP Codes in Pangmeng, Nahong | 04000 |
| Postal/ZIP Codes in Phia, Nahong | 04000 |
| Postal/ZIP Codes in Vanggnan, Nahong | 04000 |