| Place | Post Code |
|---|---|
| Acequia Grande, San Antonio | 20104 |
| Bajo Monge, San Antonio | 20104 |
| Cañada, San Antonio | 20104 |
| Ciruelas, San Antonio | 20104 |
| Monserrat, San Antonio | 20104 |
| Montecillos, San Antonio | 20104 |
| Puente Arena, San Antonio | 20104 |
| Roble, San Antonio | 20104 |
| San Antonio de Tejar, San Antonio | 20104 |
| Sánchez, San Antonio | 20104 |
| Tejar, San Antonio | 20104 |
| Vegas, San Antonio | 20104 |
| Villabonita, San Antonio | 20104 |