| Place | Post Code |
|---|---|
| Longkhaen, Phongnaeng | 10000 |
| Nainayaeng, Phongnaeng | 10000 |
| Phonephaeng, Phongnaeng | 10000 |
| Phoneyaeng, Phongnaeng | 10000 |
| Thaxan, Phongnaeng | 10000 |
| All postal codes in Keo Oudom | |
|---|---|
| Keokou, Keo Oudom | |
| Namgum, Keo Oudom | |
| Phongnaeng, Keo Oudom | |
| Thetsaban, Keo Oudom | |
| Viengkham, Keo Oudom | |