McHenry County is located in the U.S. state of Illinois. As of 2000, the population was 260,077. As of 2008, the U.S. Census Bureau estimated the population to be 318,641. Its county seat is Woodstock, Illinois. This county is part of the Chicago metropolitan area. It is the sixth largest county, in terms of population, in the state of Illinois. Long known as a center of agriculture and recreation, it has recently grappled with rapid rates of sub...
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McHenry County is located in the U.S. state of Illinois. As of 2000, the population was 260,077. As of 2008, the U.S. Census Bureau estimated the population to be 318,641. Its county seat is Woodstock, Illinois. This county is part of the Chicago metropolitan area. It is the sixth largest county, in terms of population, in the state of Illinois. Long known as a center of agriculture and recreation, it has recently grappled with rapid rates of suburbanization and urbanization.
According to the U.S. Census Bureau, the county has a total area of 611 square miles (1,583 km²), of which 604 square miles (1,563 km²) is land and 8 square miles (20 km²) (1.25%) is water.
McHenry County was formed in 1836 out of Cook and LaSalle Counties. The County was named for Major William McHenry, an Indian fighter who died in Vandalia in 1835.
McHenry County originally stretched all the way east to Lake Michigan, with the county seat centrally in McHenry, but in 1839, the eastern townships of the county...
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