Aviston is located in Clinton county Illinois with a geographic area of 1.6 square miles. The total population in Aviston is 2,173 with 49.7% male and 50.3% female. Children under age 5 represent 7.1% of the population, under age 18 equal 26.9% of the population and over age 65 is 12.5% of the population. The median household income is $81,198, per capita income is $36,182. There are a total of 739 housing units with 78.8% owner occupied. Education includes 24.8% of residents that are high school graduates and 34.6% with a bachelor's degree or higher. The average temperature in Aviston in the summer is 74 degrees, and in the winter 27 degrees.
