| Place |
Post Code |
| Chakhian, Sonphet |
07000 |
| Hanglong, Sonphet |
07000 |
| Kong 11, Sonphet |
07000 |
| Mouangliet, Sonphet |
07000 |
| Mouangnga, Sonphet |
07000 |
| Napoung, Sonphet |
07000 |
| Nathen, Sonphet |
07000 |
| Phouneuat, Sonphet |
07000 |
| Sangkhou 6, Sonphet |
07000 |
| Sangkhou 8, Sonphet |
07000 |
| Vanghay, Sonphet |
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 |