In 2023, Lake County, IL had a population of 712k people with a median age of 38.9 and a median household income of $108,917. Between 2022 and 2023 the population of Lake County, IL declined from 713,159 to 711,885, a −0.179% decrease and its median household income grew from $104,553 to $108,917, a 4.17% increase.
The 5 largest ethnic groups in Lake County, IL are White (Non-Hispanic) (57.1%), Two+ (Hispanic) (8.52%), Asian (Non-Hispanic) (8.36%), Other (Hispanic) (7.78%), and White (Hispanic) (6.87%).
None of the households in Lake 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.
90.6% of the residents in Lake County, IL are U.S. citizens.
The largest universities in Lake County, IL are College of Lake County (4,149 degrees awarded in 2022), Rosalind Franklin University of Medicine and Science (651 degrees), and Lake Forest College (483 degrees).
In 2023, the median property value in Lake County, IL was $326,600, and the homeownership rate was 74.4%.
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.
Lake County, IL borders Cook County, IL, McHenry County, IL, Allegan County, MI, Berrien County, MI, Van Buren County, MI, and Kenosha County, WI.