Fairfax is located in Linn county Iowa with a geographic area of 3.0 square miles. The total population in Fairfax is 2,770 with 52.3% male and 47.7% female. Children under age 5 represent 7.1% of the population, under age 18 equal 30.1% of the population and over age 65 is 9.1% of the population. The median household income is $103,347, per capita income is $38,997. There are a total of 953 housing units with 92.8% owner occupied. Education includes 15.7% of residents that are high school graduates and 40.3% with a bachelor's degree or higher. The average temperature in Fairfax in the summer is 72 degrees, and in the winter 23 degrees.
