McHenry County, Illinois
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McHenry is a county in Illinois. It was formed in 1836 (1837) from the following county/ies: Cook unorganized (LaSalle). McHenry began keeping birth records in 1877, marriage records in 1837, and death records in 1877. It began keeping land records in 1839, probate records in 1840, and court records in 1838. For more information, contact the county at 2200 N. Seminary Ave., Woodstock 60098. On the attached map, McHenry is located at A6.
For information about the state of Illinois see Illinois Family History Research.