In 2019, Lake County, IL had a population of 697k people with a median age of 38.7 and a median household income of $92,511. Between 2018 and 2019 the population of Lake County, IL declined from 700,832 to 696,535, a −0.613% decrease and its median household income grew from $87,133 to $92,511, a 6.17% increase.
The 5 largest ethnic groups in Lake County, IL are White (Non-Hispanic) (60.3%), White (Hispanic) (13.9%), Asian (Non-Hispanic) (7.9%), Other (Hispanic) (7.11%), and Black or African American (Non-Hispanic) (6.54%). 29.8% of the households in Lake County, IL speak a non-English language at home as their primary language, and 91.5% 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 2019, the median property value in Lake County, IL was $274,400, and the homeownership rate was 72.9%. Most people in Lake County, IL drove alone to work, and the average commute time was 27.8 minutes. The average car ownership in Lake County, IL was 2 cars per household.