Columbia is located in Illinois. Columbia, Illinois has a population of 10,188. Columbia is more family-centric than the surrounding county with 39.46% of the households containing married families with children. The county average for households married with children is 35.74%.
The median household income in Columbia, Illinois is $83,850. The median household income for the surrounding county is $74,410 compared to the national median of $57,652. The median age of people living in Columbia is 40.3 years.
The average high temperature in July is 87.7 degrees, with an average low temperature in January of 23.3 degrees. The average rainfall is approximately 42.6 inches per year, with 11.5 inches of snow per year.