Fort Hunt is a census-designated place in Fairfax County, Virginia, United States. The area is named after Fort Hunt, which was built on the bank of the Potomac River in 1897 to defend Washington, D.C. from naval attack and is now a public park. The area is also notable for its high population of senior citizens and for being one of the first suburbs in wealthy Fairfax County. The population was 16,045 at the 2010 census.