Fairfield is located in Jefferson county Iowa with a geographic area of 6.6 square miles. The total population in Fairfield is 10,327 with 48.4% male and 51.6% female. Children under age 5 represent 4.2% of the population, under age 18 equal 20.9% of the population and over age 65 is 21.0% of the population. The median household income is $42,862, per capita income is $28,672. There are a total of 3,750 housing units with 62.6% owner occupied. Education includes 19.5% of residents that are high school graduates and 50.1% with a bachelor's degree or higher. The average temperature in Fairfield in the summer is 74 degrees, and in the winter 23 degrees.
