| Place | Post Code |
|---|---|
| Bajo Herrera, San Antonio | 10408 |
| Calle Herrera, San Antonio | 10408 |
| Charcón, San Antonio | 10408 |
| Cruce Guanacaste, San Antonio | 10408 |
| Estero, San Antonio | 10408 |
| Río Viejo, San Antonio | 10408 |
| Salitral, San Antonio | 10408 |
| San Antonio, San Antonio | 10408 |
| Tinamaste, San Antonio | 10408 |