Berwyn is a census-designated place (CDP) in Chester County, Pennsylvania, United States. The population was 3,631 at the 2010 census. The area is part of Philadelphia's Main Line suburbs.
At times, the village has been called Cocheltown, Reeseville, Glassley and Gaysville. The town received its present name in 1877 during the celebration of its centennial when one of the Welsh settlers proposed to name the village after the Berwyn Hills overlooking the Valley of the Dee River in Denbighshire, Wales.
Berwyn is located at 40°2′44″N 75°26′22″W. According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (4.8 km2), all of it land.
Berwyn is located within Tredyffrin and Easttown Townships. The area is part of Philadelphia's Main Line suburbs.
The population was 3,631 at the 2010 census. Prior to 2010 it was part of the Devon-Berwyn CDP.
Berwyn is home of the Footlighters' Theater, a non-profit theater that has provided entertainment for over 80 years.