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Belleville is located in Illinois. Belleville, Illinois has a population of 42,473. Belleville is less family-centric than the surrounding county with 26% of the households containing married families with children. The county average for households married with children is 29%.
The median household income in Belleville, IL is $43,244. The median household income for the surrounding county is $52,676 compared to the national median of $57,525. The median age of people living in Belleville is 39 years old.Learn more about Real Estate.