Franklin Farm refers to both a census-designated place and a planned community located within the Oak Hill section of Fairfax County, Virginia, United States. It is a suburb of Washington, D.C., located about 20 miles west of the White House. At the 2020 census it had a population of 19,189.The planned community of Franklin Farm is located within the CDP. Covering slightly less than 30 percent of the CDP, the planned community occupies 1.32 square miles and contains 1,777 housing units.