| Place | Post Code |
|---|---|
| Boung Bao, Naxok | 12000 |
| Done Mouang, Naxok | 12000 |
| Houy Yen, Naxok | 12000 |
| Na Hai, Naxok | 12000 |
| Na Ka Tang, Naxok | 12000 |
| Na Veng, Naxok | 12000 |
| Ni Yom, Naxok | 12000 |
| Pak Phung, Naxok | 12000 |
| Phon Sa Vang, Naxok | 12000 |
| Phon Sait, Naxok | 12000 |
| Phon Toum, Naxok | 12000 |
| Tha Pha, Naxok | 12000 |
| All postal codes in Nhommalath | |
|---|---|
| Hai, Nhommalath | |
| Nabo - Xiangdao, Nhommalath | |
| Naxok, Nhommalath | |
| Nongping, Nhommalath | |
| Phit, Nhommalath | |
| Vienglouang, Nhommalath | |