Devon is a census-designated place (CDP) located in Easttown Township, Chester County, Pennsylvania, United States. The population was 1,515 at the 2010 census. The area is part of Philadelphia's Main Line suburbs.
Devon is located at 40°2′59″N 75°25′32″W.
According to the United States Census Bureau, the CDP has a total area of 0.62 square miles (1.6 km2), all of it land.
Devon is known for the Devon Horse Show, the oldest and largest outdoor multi-breed horse competition in the United States. The event is held in late May to early June and lasts ten days.
It was also home to the Valley Forge Music Fair from 1955 to 1996, hosting hundreds of famous musical and comedy acts.
The public school system is Tredyffrin-Easttown.
Most of Devon CDP lies within the boundary of Devon Elementary School, outside of the CDP. A small section is in the boundary of Hillside Elementary School in Tredyffrin Township.
The district operates two middle schools, Tredyffrin/Easttown and Valley Forge. Conestoga High School, located west of Devon, near Berwyn CDP, serves the CDP.
Devon Preparatory School, a Catholic school, is located just east of the CDP in Tredyffrin Township.
Hilltop Park, with a Devon address but outside of the Devon CDP, is operated by the township government.