In 2022, Cook County, IL had a population of 5.23M people with a median age of 37.5 and a median household income of $78,304. Between 2021 and 2022 the population of Cook County, IL declined from 5.27M to 5.23M, a −0.76% decrease and its median household income grew from $72,121 to $78,304, a 8.57% increase.
The 5 largest ethnic groups in Cook County, IL are White (Non-Hispanic) (41.1%), Black or African American (Non-Hispanic) (22.4%), Other (Hispanic) (10.2%), White (Hispanic) (8.28%), and Asian (Non-Hispanic) (7.63%).
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.
90.2% of the residents in Cook County, IL are U.S. citizens.
The largest universities in Cook County, IL are Northwestern University (9,725 degrees awarded in 2022), University of Illinois Chicago (8,607 degrees), and University of Chicago (7,328 degrees).
In 2022, the median property value in Cook County, IL was $293,700, and the homeownership rate was 57.5%.
Most people in Cook County, IL drove alone to work, and the average commute time was 32.3 minutes. The average car ownership in Cook County, IL was 2 cars per household.
Cook County, IL borders DuPage County, IL, Kane County, IL, Lake County, IL, McHenry County, IL, Will County, IL, Lake County, IN, Porter County, IN, and Berrien County, MI.