| Place | Post Code |
|---|---|
| Acchas, Masin | 02324 |
| Acllacancha, Masin | 02324 |
| Ajen, Masin | 02324 |
| Allgupasengan, Masin | 02324 |
| Arguay Grande, Masin | 02324 |
| Cachil, Masin | 02324 |
| Calero, Masin | 02324 |
| Callash, Masin | 02324 |
| Callash de Agchas, Masin | 02324 |
| Chihuan, Masin | 02324 |
| Chuquibamba, Masin | 02324 |
| Cochas, Masin | 02324 |
| Huamoyoj, Masin | 02324 |
| Huancash, Masin | 02324 |
| Huaripampa, Masin | 02324 |
| Huaynacancha, Masin | 02324 |
| Huayo, Masin | 02324 |
| Huayobamba, Masin | 02324 |
| Huaytuna, Masin | 02324 |
| Huisllac, Masin | 02324 |
| Illarag, Masin | 02324 |
| Jancu, Masin | 02324 |
| Jatopampa, Masin | 02324 |
| Jircahuayi, Masin | 02324 |
| Llihuan Arhuay, Masin | 02324 |
| Lloclla, Masin | 02324 |