Largo is an unincorporated area and census-designated place in Prince George's County, Maryland, United States. The population was 11,605 at the 2020 census. Largo is located just east of the Capital Beltway and is home to Prince George's Community College and Largo High School. Six Flags America amusement park is to the east in Woodmore, and FedExField, the Washington Commanders's stadium, is across the Capital Beltway in Summerfield.