In 2018, Lake County, IL had a population of 701k people with a median age of 38.5 and a median household income of $87,133. Between 2017 and 2018 the population of Lake County, IL declined from 703,520 to 700,832, a -0.382% decrease and its median household income grew from $85,895 to $87,133, a 1.44% increase.
The 5 largest ethnic groups in Lake County, IL are White (Non-Hispanic) (60.9%), White (Hispanic) (13.2%), Asian (Non-Hispanic) (8%), Other (Hispanic) (7.52%), and Black or African American (Non-Hispanic) (6.35%). 30% of the households in Lake County, IL speak a non-English language at home as their primary language, and 90.5% of the residents in Lake County, IL are U.S. citizens.
The largest universities in Lake County, IL are College of Lake County (3,021 degrees awarded in 2019), Rosalind Franklin University of Medicine and Science (638 degrees), and Lake Forest College (463 degrees).
In 2018, the median property value in Lake County, IL was $269,300, and the homeownership rate was 73.7%. Most people in Lake County, IL drove alone to work, and the average commute time was 28.8 minutes. The average car ownership in Lake County, IL was 2 cars per household.