Chantilly is located in Fairfax county Virginia with a geographic area of 12.0 square miles. The total population in Chantilly is 23,820 with 50.7% male and 49.3% female. Children under age 5 represent 4.3% of the population, under age 18 equal 25.3% of the population and over age 65 is 10.6% of the population. The median household income is $131,071, per capita income is $48,561. There are a total of 7,080 housing units with 79.0% owner occupied. Education includes 11.4% of residents that are high school graduates and 66.1% with a bachelor's degree or higher. The average temperature in Chantilly in the summer is 71 degrees, and in the winter 35 degrees.
