| Locality | Post Code |
|---|---|
| Amatitlán, Pilcaya | 40396 |
| Cacahuamilpa, Pilcaya | 40391 |
| Chimaltitlán, Pilcaya | 40395 |
| Cuitlapa, Pilcaya | 40387 |
| El Mogote, Pilcaya | 40390 |
| El Platanar, Pilcaya | 40381 |
| El Sáuz, Pilcaya | 40382 |
| El Uvalar, Pilcaya | 40394 |
| Grutas de Cacahuamilpa, Pilcaya | 40397 |
| Juchimilpa, Pilcaya | 40383 |
| La Concepción, Pilcaya | 40380 |
| Piedras Negras, Pilcaya | 40392 |
| Pilcaya, Pilcaya | 40380 |
| Santa Teresa, Pilcaya | 40398 |