| Place | Post Code |
|---|---|
| Hatxaisoung, Hatxaysoung | 17000 |
| Khanmaaknao, Hatxaysoung | 17000 |
| Nam Kang, Hatxaysoung | 17000 |
| All postal codes in Sanamxay | |
|---|---|
| Baengvilai, Sanamxay | |
| Hatxaysoung, Sanamxay | |
| Hinlat, Sanamxay | |
| Nonghin, Sanamxay | |
| Oudomsouk, Sanamxay | |
| Pakbo, Sanamxay | |
| Pouy, Sanamxay | |
| Sompoy, Sanamxay | |