In 2018, Cook County, IL had a population of 5.18M people with a median age of 37 and a median household income of $63,353. Between 2017 and 2018 the population of Cook County, IL declined from 5.21M to 5.18M, a -0.59% decrease and its median household income grew from $61,405 to $63,353, a 3.17% increase.
The 5 largest ethnic groups in Cook County, IL are White (Non-Hispanic) (41.9%), Black or African American (Non-Hispanic) (22.8%), White (Hispanic) (15.3%), Other (Hispanic) (8.76%), and Asian (Non-Hispanic) (7.47%). 35.6% of the people in Cook County, IL speak a non-English language, and 90% are U.S. citizens.
The largest universities in Cook County, IL are Northwestern University (9,012 degrees awarded in 2017), University of Illinois at Chicago (7,605 degrees), and DePaul University (6,411 degrees).
The median property value in Cook County, IL is $255,900, and the homeownership rate is 57.2%. Most people in Cook County, IL commute by Drove Alone, and the average commute time is 31.9 minutes. The average car ownership in Cook County, IL is 2 cars per household.
Cook County, IL borders McHenry County, IL, Lake County, IL, Kane County, IL, Will County, IL, Porter County, IN, Lake County, IN, Berrien County, MI, and DuPage County, IL.