Sycamore is located in Dekalb county Illinois with a geographic area of 10.1 square miles. The total population in Sycamore is 17,990 with 45.6% male and 54.4% female. Children under age 5 represent 5.9% of the population, under age 18 equal 24.8% of the population and over age 65 is 13.7% of the population. The median household income is $65,924, per capita income is $33,586. There are a total of 7,083 housing units with 66.0% owner occupied. Education includes 14.3% of residents that are high school graduates and 42.9% with a bachelor's degree or higher. The average temperature in Sycamore in the summer is 71 degrees, and in the winter 27 degrees.
