Fort Washington is an unincorporated area and census-designated place in Prince George's County, Maryland. It borders the capital of the United States of America, Washington, D.C., situated just south of the downtown district. As of the 2010 census it had a population of 23,717. It is a prosperous community with an African American majority population. The Fort Washington community is located west of Maryland Route 210, with some additional area to the east of the highway.