| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Hai Neua, Naphakeo | 12000 |
| Postal/ZIP Codes in Hai Tai, Naphakeo | 12000 |
| Postal/ZIP Codes in Ka Vak, Naphakeo | 12000 |
| Postal/ZIP Codes in Na Sao, Naphakeo | 12000 |
| Postal/ZIP Codes in Pha Keo, Naphakeo | 12000 |
| Postal/ZIP Codes in Thong Kuang, Naphakeo | 12000 |