Clinton is located in De witt county Illinois with a geographic area of 3.6 square miles. The total population in Clinton is 6,982 with 47.5% male and 52.5% female. Children under age 5 represent 6.6% of the population, under age 18 equal 24.3% of the population and over age 65 is 19.4% of the population. The median household income is $46,741, per capita income is $27,368. There are a total of 3,102 housing units with 62.8% owner occupied. Education includes 35.0% of residents that are high school graduates and 18.4% with a bachelor's degree or higher. The average temperature in Clinton in the summer is 74 degrees, and in the winter 27 degrees.