McHenry County on the map of Illinois 2024. Cities, roads, borders and directions in McHenry County of Illinois.

McHenry County is situated in Chicago suburban region of Illinois. This wonderful county was named after Major William McHenry (c. 1771-1835), officer during several campaigns against Native Americans. The area of McHenry County is about 603 square miles. This county, created in 1836, is populated today by 311 thousand residents. Woodstock is the county seat of McHenry County. This map shows the borders of McHenry County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of McHenry County.