Emergency Crime Scene and Biohazard Cleanup in Chesterbrook, PA

Chesterbrook is a census-designated place in Tredyffrin Township, Chester County — not an incorporated town at all, but one of the Philadelphia area's original master-planned communities.

Chesterbrook's population jumped 22.2% between censuses, from 4,589 in 2010 to 5,610 in 2020, as the community continued to fill in.

Chesterbrook was built on the former Chesterbrook Farm, the roughly 865-acre horse farm of Alexander J. Cassatt, president of the Pennsylvania Railroad; developer Richard Fox's interests bought the farm in November 1969, and the first Chesterbrook home was not finished until November 1977 after years of legal battles.

Chesterbrook sits just south of Valley Forge National Historical Park, where George Washington's Continental Army spent the winter of 1777-78.

The community's recreational heart is the 90-acre Wilson Farm Park, which hosts Tredyffrin Township's Fourth of July fireworks and summer concerts and offers an all-abilities playground, playing fields, and a pond.

Chesterbrook lies within the Tredyffrin/Easttown School District, one of Pennsylvania's top-ranked districts, whose single high school, Conestoga High School, has been ranked the best public high school in the state.

Although Chesterbrook is firmly in Chester County, its homes carry a Wayne mailing address (ZIP code 19087) — a quirk assigned by postal officials that makes Chesterbrook the Chester County side of Wayne.

Chesterbrook packs its 5,610 residents into about 1.6 square miles, giving it a density of roughly 3,600 people per square mile, unusually dense for a suburban Main Line community.