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Columbia is located in Illinois. Columbia, Illinois has a population of 10,078. Columbia is more family-centric than the surrounding county with 34% of the households containing married families with children. The county average for households married with children is 32%.
The median household income in Columbia, IL is $72,979. 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 Columbia is 41 years old.Learn more about Real Estate.