Posen is located in Illinois. Posen, Illinois has a population of 5,752. Posen is less family-centric than the surrounding county with 24.17% of the households containing married families with children. The county average for households married with children is 29.73%.
The median household income in Posen, Illinois is $55,371. The median household income for the surrounding county is $72,121 compared to the national median of $69,021. The median age of people living in Posen is 30.1 years.
The average high temperature in July is 84.2 degrees, with an average low temperature in January of 18.2 degrees. The average rainfall is approximately 37.9 inches per year, with 31.5 inches of snow per year.
