| Place |
Post Code |
| Kaleun, Phonthong |
07000 |
| Longlao, Phonthong |
07000 |
| Manh, Phonthong |
07000 |
| Naheng, Phonthong |
07000 |
| Ong-Xeng, Phonthong |
07000 |
| Phiengluang, Phonthong |
07000 |
| Phonthong, Phonthong |
07000 |
| Tong Tai, Phonthong |
07000 |
| Tongnua, Phonthong |
07000 |
| Xiengken, Phonthong |
07000 |
| All postal codes in Viengxay |
| Chat, Viengxay |
| Kang, Viengxay |
| Long-ang, Viengxay |
| Muangpan, Viengxay |
| Muangpoua, Viengxay |
| Namnga, Viengxay |
| Namxang, Viengxay |
| Phonthong, Viengxay |
| Phoun, Viengxay |
| Sonphet, Viengxay |
| Soy, Viengxay |
| Thetsaban, Viengxay |
| Xienglong, Viengxay |
| Xiengmaen, Viengxay |