McHenry County was founded in 1836 and has a total area of 610.81 sq mi. Woodstock is the county seat while the largest city is Crystal Lake, Illinois. The territory houses a population of over 0.33 million with a racial makeup including White, Native American, black or African American, Asian, Hispanic or Latino, Pacific Islander, and others with around 89.4K households and 69.2K families. The County is named after the Major William McHenry.

The wonderful collection of ancestral data on World War I and II information, American Civil War history, demise facts, civil court case lookups, marriage and divorce details, obituary notice, origin and birth details, burial and cemetery details, census data, immigration and naturalization specifics, marriage volume number, last will or probate specifics, war and enlistment data real estate and property facts, land and estate data and the likes that are available with the county records site of McHenry County, IL, has been really splendid indeed!