| Locality | Post Code |
|---|---|
| Atalaya, San Antonio | Y4600 XBI |
| Cerro Negro, San Antonio | Y4605 XAA |
| El Ceibal, San Antonio | Y4603 XAK |
| El Ollero, San Antonio | Y4605 XAF |
| La Toma, San Antonio | Y4605 XAC |
| Los Alisos, San Antonio | Y4605 XAD |
| Paño, San Antonio | Y4605 XAE |
| Perico de San Antonio, San Antonio | Y4605 |
| Río Blanco, San Antonio | Y4605 XAG |
| San Antonio, San Antonio | Y4605 |