Mount Vernon is located in Illinois. Mount Vernon, Illinois has a population of 14,656. Mount Vernon is less family-centric than the surrounding county with 25% households with children. The county percentage for households with children is 26%.
The median household income in Mount Vernon, Illinois is $42,821. The median household income for the surrounding county is $51,715 compared to the national median of $66,222. The median age of people living in Mount Vernon is 39.4 years.
The average high temperature in July is 87.8 degrees, with an average low temperature in January of 18.8 degrees. The annual precipitation is 42.19.