About Our County
Lake County is located in northeastern Illinois, with Lake Michigan to the east, Wisconsin to the north and the City of Chicago to the south. The county's communities include picturesque rural communities, highly developed urban centers, wealthy suburbs and tourist communities.
The 2010 census showed an estimated 703,000 people call our county home, According to the U.S. Census Bureau, the county has a total area of 1,368 square miles of which, 448 square miles of it is land and 920 square miles of it is water, much of it in Lake Michigan. Besides Lake Michigan, which borders the county on the east, we also have 170 other lakes and rivers, along with 400 miles of streams, and thousands of acres of wetlands.