Mendon is located in Illinois. Mendon, Illinois has a population of 974. Mendon is more family-centric than the surrounding county with 33% households with children. The county percentage for households with children is 25%.
The median household income in Mendon, Illinois is $60,198. The median household income for the surrounding county is $55,430 compared to the national median of $66,222. The median age of people living in Mendon is 38.7 years.
The average high temperature in July is 86.72 degrees, with an average low temperature in January of 15.98 degrees. The annual precipitation is 38.44.