Avon is located in Fulton county Illinois with a geographic area of 0.4 square miles. The total population in Avon is 690 with 53.0% male and 47.0% female. Children under age 5 represent 7.7% of the population, under age 18 equal 24.8% of the population and over age 65 is 18.6% of the population. The median household income is $35,833, per capita income is $22,257. There are a total of 328 housing units with 81.1% owner occupied. Education includes 48.5% of residents that are high school graduates and 6.4% with a bachelor's degree or higher. The average temperature in Avon in the summer is 74 degrees, and in the winter 27 degrees.