| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Houaymao, Sanamxai | 13000 |
| Postal/ZIP Codes in Nonekoung, Sanamxai | 13000 |
| Postal/ZIP Codes in Nonesaat, Sanamxai | 13000 |
| Postal/ZIP Codes in Nongkhamhed, Sanamxai | 13000 |
| Postal/ZIP Codes in Sanamxay, Sanamxai | 13000 |
| Postal/ZIP Codes in Xaysaat, Sanamxai | 13000 |