Time Zone: Lake County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.
The community of Waukegan is the Seat for Lake County.
Lake County was founded in 1839 and was created by taking area from McHenryCounty.
From the Census Estimates for 2009, <1> Lake had a population of 712,567 people. This is an increase of 10.59% since the last Census (which gave a population of 644,356 people in 2000).
At the time of the 2000 Census, Lake represented 5.19% of the total population of Illinois, making it the state's 3rd most populous county (out of 102 counties).
The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.
Year | Population | Change Since 2000 | Year-to-Year Change |
2010 | 703,462 | +9.17% | -1.28% since 2009 |
2009 | 712,567 | +10.59% | +0.7% since 2008 |
2008 | 707,622 | +9.82% | +0.73% since 2007 |
2007 | 702,479 | +9.02% | |
--- | | | 2000 | 644,356 | The Last Census |
More information can be found on the Lake County Census Page for Lake County. .
Below are some of the communities located in Lake County (for more communities, please visit our Nearby Page for Lake County):
Community | 2009 Population | 2000 Population | Change (2009vs. 2000) |
Waukegan | 90,622 | 87,901 | 3.1% increase |
Mundelein | 33,979 | 30,935 | 9.84% increase |
North Chicago | 32,656 | 35,918 | 9.08% decrease |
Highland Park | 31,516 | 31,365 | 0.48% increase |
Gurnee | 30,571 | 28,834 | 6.02% increase |
Websites for Lake County
If you know of a history or genealogy society whose interest includes Lake County, would you please send us the URL for their website? We would like to add their link to our Gazetteer. To contact us, please visit our Feedback Page.
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