| Place | Post Code |
|---|---|
| Buenos Aires, Buenos Aires | 20381 |
| Cajalobos, Buenos Aires | 20380 |
| Carrasquillo, Buenos Aires | 20380 |
| Chihuahua, Buenos Aires | 20380 |
| El Ala, Buenos Aires | 20380 |
| Hualas, Buenos Aires | 20380 |
| Ingenio de Buenos Aires, Buenos Aires | 20380 |
| Juan Velasco, Buenos Aires | 20380 |
| La Maravilla, Buenos Aires | 20380 |
| La Pilca, Buenos Aires | 20380 |
| La Toma, Buenos Aires | 20380 |
| Linderos del Ala, Buenos Aires | 20380 |
| Morroponcito, Buenos Aires | 20380 |
| Olguin, Buenos Aires | 20380 |
| Pampa Flores, Buenos Aires | 20380 |
| Pedregal, Buenos Aires | 20380 |
| Piedra Herrada, Buenos Aires | 20380 |
| Pueblo Libre, Buenos Aires | 20380 |
| Pueblo Nuevo, Buenos Aires | 20380 |
| Rio Seco, Buenos Aires | 20380 |
| Vijucal, Buenos Aires | 20380 |
| Vista Alegre, Buenos Aires | 20380 |