Avon is located in Hendricks county Indiana with a geographic area of 18.8 square miles. The total population in Avon is 18,056 with 48.3% male and 51.7% female. Children under age 5 represent 5.6% of the population, under age 18 equal 23.2% of the population and over age 65 is 11.3% of the population. The median household income is $93,352, per capita income is $40,854. There are a total of 6,627 housing units with 78.3% owner occupied. Education includes 22.8% of residents that are high school graduates and 45.0% with a bachelor's degree or higher. The average temperature in Avon in the summer is 73 degrees, and in the winter 29 degrees.