McHenry County, Illinois Genealogy Guide

McHenry County, Illinois (Map It) was created on January 16, 1836 from Cook County and unorganized land. McHenry County was named for Major William McHenry (c. 1771-1835), officer in during several campaigns against Native Americans and member of the Illinois legislature . Learn More About State of Illinois History

McHenry County is bordered by  Walworth County, Wisconsin (north), Kenosha County, Wisconsin (northeast), Lake County (east), Cook County (southeast), Kane County (south), DeKalb County (southwest), Boone County (west)

McHenry County Cities, Towns & Villages include  Crystal Lake, Algonquin, Lake in the Hills, McHenry, Cary, Woodstock, Huntley, Fox Lake, Island Lake, Harvard, Marengo, Johnsburg, Spring Grove, Lakemoor, Fox River Grove, Barrington Hills, Wonder Lake, Lakewood, Oakwood Hills, Richmond, Prairie Grove, Hebron, Bull Valley, McCullom Lake, Port Barrington, Holiday Hills, Union, Trout Valley, Ringwood, Greenwood.

McHenry County Townships include  Hebron, Hartland, Grafton, Greenwood, Algonquin, Alden, Chemung, Burton, Coral, Dorr, Dunham, Nunda, McHenry, Marengo, Seneca, Richmond, Riley. View the McHenry Federal Township Plats of Illinois from 1804-1891.

A McHenry County, Illinois General Highway Maps includes County, City and Township maps which contains detailed information about roads and boundaries, these maps may include rural communities, churches, and cemeteries.

McHenry County, Illinois Courthouse Records

McHenry County, Illinois Courthouse
McHenry County, IL Courthouse

The McHenry County Courthouse is located in Woodstock, Illinois. Woodstock was named Named Centreville until 1844 (prior county seats was McHenry from 1837–1843). Learn More About State of Illinois Court, Tax, Land and Probate Records.

Please contact the each clerk's department to confirm mailing address, hours, fees and other information before visiting or requesting information because contact information sometimes changes.  The Clerk's Office DOES NOT DO RESEARCH.  The documents are available to interested parties, barring confidential issues.  Most staff will assist people in finding the materials, but it is up to the individual to do the research.

The following dates indicates what vital, land, probate, and court records are in McHenry county. The date listed for each category of record is usually the earliest registration filed. The earliest date does not indicate that there are numerous records for that year and does not mean that all such events were actually registered.

  • McHenry County Clerk has Marriage Records from 1837 and Birth & Death Records from 1877. The County Clerk maintains records and issues certificates of vital statistics (birth certificates, death certificates, and marriage certificates) for the entire County.
  • McHenry County Recorder of Deeds has Land Records from 1839. The County Recorder of Deeds serves the people of County by receiving, filing and maintaining all records related to real property in our county. These documents range from all types of conveyance deeds, mortgages, releases and assignments, property liens, as well as, assorted federal, state and local liens. The Recorder’s office is responsible for the recordation and storage of plats of subdivision, land surveys and monument records. Many other types of miscellaneous documents are recorded, such as; foreign birth certificates, foreign marriage licenses, and military discharge paperwork to name a few.
  • McHenry County Clerk of the Circuit Court has Probate Records from 1840 and Court Records from 1838. The County Clerk of the Circuit Court, commonly known as the Circuit Clerk, is the keeper of the files and records of the Circuit Court. The Circuit Clerk's Office retains documents some of which include criminal law, chancery, support, probate, adoption, ect....
  • McHenry County Treasurer's Office is responsible for the statutory duties required as County Treasurer and as Ex-Officio County Collector of Real Estate Property Taxes and Drainage District Taxes for the entire county.
  • Local Government Records Database provides a listing of the local governmental records held by the Illinois Regional Archives Depository (IRAD) system

McHenry County, Illinois Census Records

McHenry County, Illinois Vital Records

McHenry County, Illinois Resources

McHenry County, Illinois External Links