Lake County, Administrative county in northeastern Illinois, United States
Lake County is a governmental territory in northeastern Illinois that stretches along the western shore of Lake Michigan. The water surface of the lake makes up more than two thirds of the total area, while the land portion includes towns, suburbs, and protected natural spaces.
The state government created this territory in March 1839 from portions of what was then McHenry County. Two years later, Waukegan was confirmed as the permanent seat of county administration.
The county takes its name from the lake that forms its entire eastern edge. The shoreline draws residents and visitors to beaches, harbors, and waterfront areas throughout the warmer months.
The Forest Preserves District operates trails, viewing areas, and green spaces across the region, many located along rivers and wetlands. Public access to these areas is usually available during daylight hours.
The territory ranks among the few counties in the United States where water surface exceeds land area. The wide expanse of Lake Michigan within county boundaries dominates maps of the region.
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