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Vandalia is located in Illinois. Vandalia, Illinois has a population of 6,691. Vandalia is more family-centric than the surrounding county with 27% of the households containing married families with children. The county average for households married with children is 25%.
The median household income in Vandalia, IL is $39,895. The median household income for the surrounding county is $46,293 compared to the national median of $61,963. The median age of people living in Vandalia is 37 years old.Learn more about Real Estate.