Mount Vernon Real EstateMount Vernon is located in Illinois. Mount Vernon, Illinois has a population of 14,723. Mount Vernon is less family-centric than the surrounding county with 20.85% of the households containing married families with children. The county average for households married with children is 27.71%. The median household income in Mount Vernon, Illinois is $37,358. The median household income for the surrounding county is $46,109 compared to the national median of $57,652. The median age of people living in Mount Vernon is 39.5 years. Mount Vernon WeatherThe average high temperature in July is 86.3 degrees, with an average low temperature in January of 20.9 degrees. The average rainfall is approximately 44 inches per year, with 13.9 inches of snow per year. Mount Vernon MapReal estate near Mount VernonNearby CitiesNearby Cities Homes for Sale |