| Place | Post Code |
|---|---|
| Alhajas, Concepción | 40603 |
| Calle Caricias, Concepción | 40603 |
| Calle Chávez, Concepción | 40603 |
| Concepción, Concepción | 40603 |
| All postal codes in San Isidro | |
|---|---|
| Concepción, San Isidro | |
| San Francisco, San Isidro | |
| San Isidro, San Isidro | |
| San José, San Isidro | |