Monroe center is located in Ogle county Illinois with a geographic area of 1.2 square miles. The total population in Monroe center is 384 with 50.8% male and 49.2% female. Children under age 5 represent 4.2% of the population, under age 18 equal 19.8% of the population and over age 65 is 14.6% of the population. The median household income is $75,833, per capita income is $32,715. There are a total of 158 housing units with 80.4% owner occupied. Education includes 30.4% of residents that are high school graduates and 24.1% with a bachelor's degree or higher. The average temperature in Monroe center in the summer is 74 degrees, and in the winter 27 degrees.