The 157th Pennsylvania House of Representatives District is located in Chester County and includes the following areas:
* Chester County
* Easttown Township
* Schuylkill Township
* Tredyffrin Township
* Williston Township
The 157th Pennsylvania House of Representatives District is located in Chester County and includes the following areas:
* Chester County
* Easttown Township
* Schuylkill Township
* Tredyffrin Township
* Williston Township (en)