| Place | Post Code |
|---|---|
| Pęchery, Piaseczno | 05-500 |
| Piaseczno, Piaseczno | 05 |
| Pilawa, Piaseczno | 05-532 |
| Robercin, Piaseczno | 05-503 |
| Runów, Piaseczno | 05-504 |
| Siedliska, Piaseczno | 05-500 |
| Szczaki, Piaseczno | 05-504 |
| Wola Gołkowska, Piaseczno | 05-503 |
| Wólka Kozodawska, Piaseczno | 05-500 |
| Wólka Pęcherska, Piaseczno | 05-502 |
| Wólka Pracka, Piaseczno | 05-504 |
| Żabieniec, Piaseczno | 05-500 |
| Zalesie Górne, Piaseczno | 05-540 |
| Złotokłos, Piaseczno | 05-504 |
| All postal codes in Piaseczyński | |
|---|---|
| Góra Kalwaria, Piaseczyński | |
| Konstancin-Jeziorna, Piaseczyński | |
| Lesznowola, Piaseczyński | |
| Piaseczno, Piaseczyński | |
| Prażmów, Piaseczyński | |
| Tarczyn, Piaseczyński | |