Maryville is located in Illinois. Maryville, Illinois has a population of 8,115. Maryville is less family-centric than the surrounding county with 25.21% of the households containing married families with children. The county average for households married with children is 30.51%.
The median household income in Maryville, Illinois is $84,402. The median household income for the surrounding county is $66,882 compared to the national median of $69,021. The median age of people living in Maryville is 50 years.
The average high temperature in July is 88.8 degrees, with an average low temperature in January of 22.4 degrees. The average rainfall is approximately 43 inches per year, with 11.6 inches of snow per year.
