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All Lake County population data above are from the US Census Bureau.
The population data for Lake County are from the Census' American Community Survey 2016 5-year estimates and the Census' 2017 Population Estimates. The demographic data for Kane County, McHenry County, Will County, and Will County are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2016 5-year estimates, and were downloaded on December 2017. Check out our FAQ section for more details.
With 703,520 people, Lake County is the 3rd most populated county in the state of Illinois out of 102 counties. But watch out, Lake County, because Kane County with 534,667 people and Will County with 692,661 people are right behind you.
The largest Lake County racial/ethnic groups are White (63.4%) followed by Hispanic (20.9%) and Asian (6.9%).
In 2016, the median household income of Lake County residents was $79,886. Lake County households made slightly more than McHenry County households ($79,836) and Will County households ($77,507) . However, 8.9% of Lake County residents live in poverty.
The median age for Lake County residents is 37.8 years young.
86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group
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