Dekalb is located in Dekalb county Illinois with a geographic area of 16.2 square miles. The total population in Dekalb is 42,961 with 49.4% male and 50.6% female. Children under age 5 represent 4.6% of the population, under age 18 equal 17.9% of the population and over age 65 is 9.1% of the population. The median household income is $44,223, per capita income is $24,819. There are a total of 15,839 housing units with 41.2% owner occupied. Education includes 18.7% of residents that are high school graduates and 36.9% with a bachelor's degree or higher. The average temperature in Dekalb in the summer is 71 degrees, and in the winter 27 degrees.
