| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Hatxaikhoun, Muangkao | 10000 |
| Postal/ZIP Codes in Mouang Kao, Muangkao | 10000 |
| Postal/ZIP Codes in Nakheua, Muangkao | 10000 |
| Postal/ZIP Codes in Nanin, Muangkao | 10000 |
| Postal/ZIP Codes in Parkkayoung, Muangkao | 10000 |
| Postal/ZIP Codes in Veunsan, Muangkao | 10000 |