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Gillespie is located in Illinois. Gillespie, Illinois has a population of 3,176. Gillespie is less family-centric than the surrounding county with 24% of the households containing married families with children. The county average for households married with children is 26%.
The median household income in Gillespie, IL is $48,562. The median household income for the surrounding county is $53,387 compared to the national median of $57,525. The median age of people living in Gillespie is 40 years old.Learn more about Real Estate.