Chantilly is an unincorporated community and census-designated place (CDP) in western Fairfax County inNorthern Virginia. The Chantilly CDP population was 23,039 as of the 2010 census.
Chantilly was home to a number of colonial plantations in the 1700s, including The Sully Plantation (now the Sully Historic Site) built by Richard Bland Lee I. Other plantations included George Richard Lee Turberville's "Leeton Grove" (originally a 5,000+ acre plantation, the main house of which still stands at 4619 Walney Rd.), the John Hutchison Farm, and the "Chantilly Plantation", after which Chantilly is named. Cornelia Lee Turberville Stuart, who was born at Leeton and was the daughter of George Richard Lee Turberville and Henrietta Lee, inherited a portion of Leeton in 1817 from her father. Stuart and her husband Charles Calvert Stuart, whom she had married in 1816, constructed the Chantilly Plantation and named it after the Westmoreland County, VA plantation owned by her grandfather, Richard Henry Lee—a signer of the Declaration of Independence.Growth of the village predominantly occurred during the 19th century, particularly following the construction of Little River Turnpike (Route 236) to Winchester.The evolution of the Chantilly area into an outer suburb of Washington, D.C., gained momentum after 1980, as developers built residential subdivisions and commercial areas, filling in the farm land south of Dulles Airport.