Welcome

This county is adoptable.

See this webpage for more information if you are interested.

Our previous County Coordinator, Joe Markovich passed away June 2, 2023.
Joe was County Coordinator on behalf of many counties in:
Illinois, Michigan, New Mexico, Montana, Nevada and Virginia state USGenweb projects.

McHenry County was formed in 1836 out of Cook and LaSalle counties. The county was named for Major William McHenry, a member of the Illinois Militia during Tecumseh's War, a major during the Blackhawk War in 1832, and a member of the Illinois House of Representatives and Senate. He died in Vandalia, Illinois 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 were carved out forming Lake County.

McHenry County Government Center
2200 N. Seminary Ave
Woodstock, IL 60098
815-334-4242 – County Clerk
815-334-4310 – Circuit Clerk
815-334-4110 – Recorder
McHenry County Government Center website

For corrections or additions, please contact me: State Coordinator