In 2020, Cook County, IL had a population of 5.17M people with a median age of 37 and a median household income of $67,886. Between 2019 and 2020 the population of Cook County, IL declined from 5.2M to 5.17M, a −0.553% decrease and its median household income grew from $64,660 to $67,886, a 4.99% increase.
The 5 largest ethnic groups in Cook County, IL are White (Non-Hispanic) (42%), Black or African American (Non-Hispanic) (22.9%), White (Hispanic) (12.4%), Other (Hispanic) (9.34%), and Asian (Non-Hispanic) (7.39%).
None of the households in Cook 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.
90% of the residents in Cook County, IL are U.S. citizens.
In 2020, the median property value in Cook County, IL was $255,500, and the homeownership rate was 57.2%. Most people in Cook County, IL drove alone to work, and the average commute time was 33.2 minutes. The average car ownership in Cook County, IL was 2 cars per household.