Saint Charles is located in Illinois. Saint Charles, Illinois has a population of 26,709. Saint Charles is more family-centric than the surrounding county with 43% households with children. The county percentage for households with children is 36%.
The median household income in Saint Charles, Illinois is $141,516. The median household income for the surrounding county is $82,067 compared to the national median of $66,222. The median age of people living in Saint Charles is 40.8 years.
The average high temperature in July is 83 degrees, with an average low temperature in January of 10.9 degrees. The annual precipitation is 37.22.