Posen is located in Illinois. Posen, Illinois has a population of 6,371. Posen is more family-centric than the surrounding county with 35.23% of the households containing married families with children. The county average for households married with children is 30.49%.
The median household income in Posen, Illinois is $42,886. The median household income for the surrounding county is $59,426 compared to the national median of $57,652. The median age of people living in Posen is 30.3 years.
The average high temperature in July is 83.9 degrees, with an average low temperature in January of 15.6 degrees. The average rainfall is approximately 39.3 inches per year, with 27.8 inches of snow per year.
