| Place | Post Code |
|---|---|
| Calle Amador, San Antonio | 10305 |
| Churuca, San Antonio | 10305 |
| Constancia, San Antonio | 10305 |
| Huetares, San Antonio | 10305 |
| Plazoleta, San Antonio | 10305 |
| Pueblo Nuevo, San Antonio | 10305 |
| Río Damas, San Antonio | 10305 |
| Rotondas, San Antonio | 10305 |
| San Antonio, San Antonio | 10305 |
| Solar, San Antonio | 10305 |