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McHenry County, Illinois
Genealogy, History & Facts

McHenry County, Illinois Facts

When was McHenry County, IL Created?
McHenry County was established on January 16, 1836.

What is the County Seat of McHenry County, IL?
The County Seat is located in Woodstock was named Named Centreville until 1844 (prior county seats was McHenry from 1837–1843) also, the county government website is .

What counties are adjacent to McHenry County, IL?
Bordering Counties are  Walworth County, WI, Kenosha County, WI, Lake CountyCook CountyKane CountyDeKalb CountyBoone County

McHenry County, IL Census Records

What McHenry County, IL census records are available?
There are many types of census records for McHenry County guide you in researching your family tree. Federal Population Schedules are available for 18401850186018701880 (free index)1890 (fragment)19001910192019301940.

McHenry Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. McHenry Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. McHenry Co. Union Veterans Schedules is available for 1890. One can find free online and printable census forms to help you with your research. See Also Illinois Census Records Research Guide

McHenry County, IL Courthouse and Government Records

McHenry County Courthouse

What genealogical records can I find in the McHenry County Courthouse?
Researchers frequently overlook the great importance of McHenry County court, probate, and land records data as a useful resource of ancestry and genealogy information. Buried away in Illinois courthouses and archives everywhere are the ambitions and frustrations of countless Illinois residents.

The possibilities are excellent that your forefathers have left a comprehensive document of at least a number of facets of their lives in the McHenry County court records. Even if your forebears is not referred to in a Court case, contemplate all of the other procedures that could have lead to him or her to appear in court records. See Also Illinois Corthouse Records Research Guide.

McHenry County, IL Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for McHenry County, IL?
A list of McHenry County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Illinois Archives, Historical & Genealogical Societies.

Where can I connect with other McHenry County, IL Researchers through message boards and forums?

What other genealogical resources are available in McHenry County, IL?
The following are web links to Genealogy, Records and Resources pertaining to McHenry County. These genealogy links fall into 3 categories: Commercial Sites, Private Sites or Organization Sites. Some have free access some require a cost. This is simply a collection that has been gathered or submitted. I do not recommend or promote one genealogy site over another.

McHenry Co. IL Maps, Atlases & Gazetteers

McHenry Co. IL Books, Newspapers & Publications

McHenry Co. IL Cemeteries & Church Records

McHenry Co. IL Family Websites, Pictures & Histories

McHenry Co. IL General and History Websites

McHenry Co. IL Military Records