| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Dinh Kong, Napong | 14000 |
| Postal/ZIP Codes in Khoumkeo, Napong | 14000 |
| Postal/ZIP Codes in Koutnamlik, Napong | 14000 |
| Postal/ZIP Codes in Nabong, Napong | 14000 |
| Postal/ZIP Codes in Napheng, Napong | 14000 |
| Postal/ZIP Codes in Napho, Napong | 14000 |
| Postal/ZIP Codes in Nong Bok, Napong | 14000 |
| Postal/ZIP Codes in Nongno, Napong | 14000 |
| Postal/ZIP Codes in Somsaat, Napong | 14000 |