| Place | Post Code |
|---|---|
| Cerrillos, Rengo | 2940000 |
| El Retiro, Rengo | 2940000 |
| Esmeralda, Rengo | 2940000 |
| La Chimba, Rengo | 2940000 |
| Lo Cartagena, Rengo | 2940000 |
| Lo De Lobo, Rengo | 2940000 |
| Los Choapinos, Rengo | 2940000 |
| Los Gomeros, Rengo | 2940000 |
| Popeta, Rengo | 2940000 |
| Pueblo Hundido, Rengo | 2940000 |
| Rengo, Rengo | 2940000 |
| Rosario, Rengo | 2940000 |