| Place |
Post Code |
| Huayha, Houaykhing |
06000 |
| Huaykhing, Houaykhing |
06000 |
| Huaykou, Houaykhing |
06000 |
| Huaysaat, Houaykhing |
06000 |
| Huaytamang, Houaykhing |
06000 |
| Huayxoi, Houaykhing |
06000 |
| Khokhin, Houaykhing |
06000 |
| Longlaat, Houaykhing |
06000 |
| Paek, Houaykhing |
06000 |
| Phakbong, Houaykhing |
06000 |
| Phouboudnoi, Houaykhing |
06000 |
| Sakuan, Houaykhing |
06000 |
| All postal codes in Phonxay |
| Chomchieng, Phonxay |
| Donkham, Phonxay |
| Houaykhing, Phonxay |
| Katangsaluang, Phonxay |
| Nambo, Phonxay |
| Neunsoung, Phonxay |
| Paknga, Phonxay |
| Phonthong, Phonxay |
| Sopchia, Phonxay |
| Thakham, Phonxay |