Posen is located in Cook county Illinois with a geographic area of 1.2 square miles. The total population in Posen is 5,772 with 56.5% male and 43.5% female. Children under age 5 represent 7.0% of the population, under age 18 equal 27.4% of the population and over age 65 is 6.9% of the population. The median household income is $47,378, per capita income is $17,927. There are a total of 1,796 housing units with 69.5% owner occupied. Education includes 37.2% of residents that are high school graduates and 17.0% with a bachelor's degree or higher. The average temperature in Posen in the summer is 74 degrees, and in the winter 27 degrees.
