| Place | Post Code |
|---|---|
| Bohat, Longnaykao | 02000 |
| Bonang, Longnaykao | 02000 |
| Chalouangmai Neua, Longnaykao | 02000 |
| Chalouangmai Tai, Longnaykao | 02000 |
| Chavang, Longnaykao | 02000 |
| Choulaosen Kao, Longnaykao | 02000 |
| Choulaosen Mai, Longnaykao | 02000 |
| Houayway, Longnaykao | 02000 |
| Longnay Kao, Longnaykao | 02000 |
| Nambane, Longnaykao | 02000 |
| Pangkhai, Longnaykao | 02000 |