| Locality | Post Code |
|---|---|
| Betulia, San Carlos | 232517 |
| Bijagual, San Carlos | 232517 |
| El Cerrito, San Carlos | 232517 |
| El Sabanal, San Carlos | 232507 |
| Km. 28, San Carlos | 232517 |
| Las Lamas, San Carlos | 232507 |
| Las Lomas, San Carlos | 232517 |
| Patio Bonito, San Carlos | 232517 |
| San Carlos, San Carlos | 232501, 232508, 232509 |