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McHenry County, Illinois

McHenry County is located in Northeast Illinois, and contains suburbs of Chicago. The county is named for Major William McHenry, a major in the Blackhawk War of 1832.
The seat is Woodstock, while the largest city is Crystal Lake. The Fox River is a feature of the area.
Main roads in the county include I-90, US-12, US-14, US-20, IL-23, IL-31, and IL-47.
It is bordered by Lake, Cook, DeKalb, Kane and Boone Counties in Illinois; as well as Walworth and Kenosha Counties in Wisconsin.

Cities
Algonquin
Cary
Crystal Lake
Harvard
Huntley
Richmond
Spring Grove
Woodstock

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