Poolesville is a U.S. town in the western portion of Montgomery County, Maryland. The population was 5,742 at the 2020 United States Census. It is surrounded by the Montgomery County Agricultural Reserve, and is considered a distant bedroom community for commuters to Washington, D.C.

Poolesville High School is a public magnet high school located in Poolesville, Maryland, United States. It is part of the Montgomery County Public Schools system.