| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Houay-Eirk, Muangkouan | 07000 |
| Postal/ZIP Codes in Meuakuane, Muangkouan | 07000 |
| Postal/ZIP Codes in Naphadaeng, Muangkouan | 07000 |
| Postal/ZIP Codes in Nonglao, Muangkouan | 07000 |
| Postal/ZIP Codes in Vanghin, Muangkouan | 07000 |