| Place | Post Code |
|---|---|
| Cachapoal, San Carlos | 3840000 |
| El Torreón, San Carlos | 3840000 |
| Las Arboledas, San Carlos | 3840000 |
| San Carlos, San Carlos | 3840000 |
| Villa Illinois, San Carlos | 3840000 |
| All postal codes in Punilla | |
|---|---|
| Coihueco, Punilla | |
| Ñiquén, Punilla | |
| San Carlos, Punilla | |
| San Fabián, Punilla | |
| San Nicolás, Punilla | |