Chesterbrook is a census-designated place (CDP) in Chester County, Pennsylvania, United States, just south of Valley Forge National Historical Park. The population was 4,589 at the 2010 census.
Chesterbrook is located at 40°4′28″N 75°27′18″W (40.074378, -75.455018).
According to the United States Census Bureau, the CDP has a total area of 1.6 square miles (4.1 km2), all of it land.
Chesterbrook is located about 23 miles away from Philadelphia.
At the 2000 census there were 4,625 people, 2,356 households, and 1,175 families living in the CDP. The population density was 2,871.7 people per square mile (1,109.1/km2). There were 2,413 housing units at an average density of 1,498.3/sq mi (578.7/km2). The racial makeup of the CDP was 89.71% White, 1.84% African American, 0.17% Native American, 7.07% Asian, 0.52% from other races, and 0.69% from two or more races. Hispanic or Latino of any race were 2.03%.
There were 2,356 households, 20.4% had children under the age of 18 living with them, 39.2% were married couples living together, 8.3% had a female householder with no husband present, and 50.1% were non-families. 42.1% of households were made up of individuals, and 7.2% were one person aged 65 or older. The average household size was 1.96 and the average family size was 2.71.