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About Fairfax County
Fairfax county is located in Virginia with a geographic area of 406.6 square miles. The total population in Fairfax county is 1,149,439 with 49.6% male and 50.4% female. Children under age 5 represent 6.4% of the population, under age 18 equal 23.5% of the population and over age 65 is 13.5% of the population. The median household income is $127,866, per capita income is $58,338. There are a total of 398,653 housing units with 68.6% owner occupied. Education includes 9.4% of residents that are high school graduates and 68.7% with a bachelor's degree or higher. The average temperature in Fairfax county in the summer is 76 degrees, and in the winter 36 degrees.