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Jacksonville is located in Illinois. Jacksonville, Illinois has a population of 18,787. Jacksonville is less family-centric than the surrounding county with 22% of the households containing married families with children. The county average for households married with children is 25%.
The median household income in Jacksonville, IL is $42,493. The median household income for the surrounding county is $48,566 compared to the national median of $57,525. The median age of people living in Jacksonville is 37 years old.Learn more about Real Estate.