| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Dongkhamlouang, Hoy | 13000 |
| Postal/ZIP Codes in Houay Tai, Hoy | 13000 |
| Postal/ZIP Codes in Kasek, Hoy | 13000 |
| Postal/ZIP Codes in Kenghinsoung, Hoy | 13000 |
| Postal/ZIP Codes in Khamsan, Hoy | 13000 |
| Postal/ZIP Codes in Nakoy, Hoy | 13000 |
| Postal/ZIP Codes in Somsaat, Hoy | 13000 |
| Postal/ZIP Codes in Song, Hoy | 13000 |
| Postal/ZIP Codes in Xokvang Nua, Hoy | 13000 |
| Postal/ZIP Codes in Xokvang Tai, Hoy | 13000 |