Wilsonville is located in Illinois. Wilsonville, Illinois has population of 490. Wilsonville is less family-centric than the surrounding county with 20% of the households with children.
The median household income in Wilsonville, Illinois is $45,282. The median household income for the surrounding county is $56,452 compared to the national median of $66,222. The median age of people living in Wilsonville is 43.5 years.
The average high temperature in July is 87.3 degrees, with an average low temperature in January of 17.4 degrees. The annual precipitation is 38.67.