| Place |
Post Code |
| Chaeng, Houayhok |
04000 |
| Chongnang, Houayhok |
04000 |
| Chormxai, Houayhok |
04000 |
| Hai, Houayhok |
04000 |
| Huayhok, Houayhok |
04000 |
| Kornlouk, Houayhok |
04000 |
| Langching, Houayhok |
04000 |
| Mokkachork, Houayhok |
04000 |
| Mongkham, Houayhok |
04000 |
| Phangaamnoi, Houayhok |
04000 |
| Phayam, Houayhok |
04000 |
| Phouthong, Houayhok |
04000 |
| All postal codes in Hoon |
| Chantai, Hoon |
| Dongngon, Hoon |
| Donkeo, Hoon |
| Faen, Hoon |
| Houayhok, Hoon |
| Na, Hoon |
| Nafang, Hoon |
| Nahom, Hoon |
| Nakham, Hoon |
| Nakhong, Hoon |
| Nam-oun, Hoon |
| Namlian, Hoon |
| Namphouan, Hoon |
| Namphoun, Hoon |
| Namtam, Hoon |
| Nangeun, Hoon |
| Navang, Hoon |
| Naxiengdi, Hoon |
| Nongbouadaeng, Hoon |
| Phonsavan, Hoon |
| Phonsavat, Hoon |
| Phonxai, Hoon |
| Phouviengxai, Hoon |
| Phouxae, Hoon |
| Sibounhuang, Hoon |
| Somphon, Hoon |
| Somxai, Hoon |