| Locality | Post Code |
|---|---|
| Benavides, Duval | 78341 |
| Concepcion, Duval | 78349 |
| Cruz Calle, Duval | 78349 |
| Freer, Duval | 78357 |
| Ramirez, Duval | 78376 |
| Realitos, Duval | 78376 |
| Rios, Duval | 78349 |
| Rosita, Duval | 78384 |
| San Diego, Duval | 78384 |
| Sejita, Duval | 78376 |
| Seven Sisters, Duval | 78357 |