Centreville is located in Fairfax county Virginia with a geographic area of 11.9 square miles. The total population in Centreville is 74,230 with 49.8% male and 50.2% female. Children under age 5 represent 6.3% of the population, under age 18 equal 24.1% of the population and over age 65 is 9.6% of the population. The median household income is $121,322, per capita income is $48,029. There are a total of 23,830 housing units with 71.1% owner occupied. Education includes 13.4% of residents that are high school graduates and 62.7% with a bachelor's degree or higher. The average temperature in Centreville in the summer is 71 degrees, and in the winter 35 degrees.