Great falls is located in Fairfax county Virginia with a geographic area of 25.4 square miles. The total population in Great falls is 14,793 with 49.7% male and 50.3% female. Children under age 5 represent 3.9% of the population, under age 18 equal 24.1% of the population and over age 65 is 21.2% of the population. The median household income is $238,828, per capita income is $106,611. There are a total of 4,852 housing units with 94.1% owner occupied. Education includes 3.1% of residents that are high school graduates and 87.2% with a bachelor's degree or higher. The average temperature in Great falls in the summer is 71 degrees, and in the winter 35 degrees.
