Rochelle is located in Ogle county Illinois with a geographic area of 13.3 square miles. The total population in Rochelle is 9,083 with 50.7% male and 49.3% female. Children under age 5 represent 4.7% of the population, under age 18 equal 21.0% of the population and over age 65 is 17.0% of the population. The median household income is $49,413, per capita income is $26,469. There are a total of 4,035 housing units with 48.6% owner occupied. Education includes 28.1% of residents that are high school graduates and 16.7% with a bachelor's degree or higher. The average temperature in Rochelle in the summer is 70 degrees, and in the winter 27 degrees.