| Locality | Post Code |
|---|---|
| Anapoima, San Antero | 231528 |
| Arenal, San Antero | 231528 |
| Barrio Lindo, San Antero | 231528 |
| Bijaito, San Antero | 231520 |
| Cabecera Municipal, San Antero | 231527 |
| El Descanso, San Antero | 231528 |
| El Socorro, San Antero | 231528 |
| El Tigre, San Antero | 231528 |
| Las Nubes, San Antero | 231527 |
| Nuevo Agrado, San Antero | 231527 |
| San Antero, San Antero | 231520 |
| San Pedro de Hondo, San Antero | 231528 |
| Santa Cruz, San Antero | 231527 |
| Santa Rita, San Antero | 231528 |
| Santa Rosa, San Antero | 231528 |
| Tijereta, San Antero | 231527 |