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Waterloo is located in Illinois. Waterloo, Illinois has a population of 10,053. Waterloo is less family-centric than the surrounding county with 31% of the households containing married families with children. The county average for households married with children is 32%.
The median household income in Waterloo, IL is $73,071. The median household income for the surrounding county is $73,594 compared to the national median of $57,525. The median age of people living in Waterloo is 42 years old.Learn more about Real Estate.