| Place | Post Code |
|---|---|
| Done Yaeng, Thongsaengchan | 05000 |
| Maihia, Thongsaengchan | 05000 |
| Mainiyom, Thongsaengchan | 05000 |
| Nalae, Thongsaengchan | 05000 |
| Namtoi, Thongsaengchan | 05000 |
| Nongngeun, Thongsaengchan | 05000 |
| Paxang, Thongsaengchan | 05000 |
| Xaichaleun, Thongsaengchan | 05000 |
| Xiengngam, Thongsaengchan | 05000 |