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 population of Cook County, IL is 41.9% White Alone, 25.5% Hispanic or Latino, and 22.8% Black or African American Alone. 35.6% of the people in Cook County, IL speak a non-English language, and 90% are U.S. citizens.
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.