Clarendon hills is located in Dupage county Illinois with a geographic area of 1.8 square miles. The total population in Clarendon hills is 8,834 with 46.9% male and 53.1% female. Children under age 5 represent 5.8% of the population, under age 18 equal 31.8% of the population and over age 65 is 13.3% of the population. The median household income is $103,486, per capita income is $67,540. There are a total of 3,431 housing units with 87.7% owner occupied. Education includes 7.2% of residents that are high school graduates and 79.4% with a bachelor's degree or higher. The average temperature in Clarendon hills in the summer is 74 degrees, and in the winter 27 degrees.