Fairmount Heights is a town in Prince George's County, Maryland, United States. Per the 2020 census, the population was 1,528. The town was formally incorporated in 1935, making the town the second oldest African-American-majority municipality in Prince George's County. The town is composed of six subdivisions: Fairmount Heights, Waterford, Mount Weissner, North Fairmount Heights, West Fairmount Heights and Sylvan Vista.