Chesterbrook is a census-designated place (CDP) in Chester County, Pennsylvania, United States.

It is located within the Philadelphia metropolitan area and just south of Valley Forge National Historical Park.

According to the U.S. Census Bureau, Chesterbrook has a total area of 1.6 square miles (4.1 km2), all land.

[7] Chesterbrook is served by SEPTA Suburban Division bus routes with the Route 124 bus connecting the community to the King of Prussia Transit Center at the King of Prussia Mall and Center City Philadelphia[8] and the Route 205 bus connecting the community during peak weekday hours to the Paoli station along SEPTA Regional Rail's Paoli/Thorndale Line.

[9] The Chester Valley Rail Trail passes south of Chesterbrook.

Walking paths connect Chesterbrook to Valley Forge National Historical Park.