Fairbury is located in Livingston county Illinois with a geographic area of 1.8 square miles. The total population in Fairbury is 3,604 with 46.6% male and 53.4% female. Children under age 5 represent 8.0% of the population, under age 18 equal 22.7% of the population and over age 65 is 24.5% of the population. The median household income is $57,563, per capita income is $29,886. There are a total of 1,572 housing units with 63.5% owner occupied. Education includes 36.2% of residents that are high school graduates and 14.5% with a bachelor's degree or higher. The average temperature in Fairbury in the summer is 74 degrees, and in the winter 27 degrees.