In 2022, Marion County, IL had a population of 37.5k people with a median age of 41.9 and a median household income of $59,099. Between 2021 and 2022 the population of Marion County, IL declined from 37,781 to 37,543, a −0.63% decrease and its median household income grew from $53,209 to $59,099, a 11.1% increase.
The 5 largest ethnic groups in Marion County, IL are White (Non-Hispanic) (90.2%), Black or African American (Non-Hispanic) (4.31%), Two+ (Non-Hispanic) (2.49%), White (Hispanic) (0.97%), and Two+ (Hispanic) (0.788%).
None of the households in Marion County, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.3% of the residents in Marion County, IL are U.S. citizens.
In 2022, the median property value in Marion County, IL was $96,200, and the homeownership rate was 73.8%.
Most people in Marion County, IL drove alone to work, and the average commute time was 19.8 minutes. The average car ownership in Marion County, IL was 2 cars per household.
Marion County, IL borders Clay County, IL, Clinton County, IL, Fayette County, IL, Jefferson County, IL, Washington County, IL, and Wayne County, IL.