It is a small city in McHenry County, Illinois, USA. The city's population is approximately 27,000 people. McHenry got its name from the county, which was named in honor of Major William McHenry, a prominent officer in the US Army.
Numerous natural lakes, grassy hills, and other natural wonders surround the city. The city is home to a beautiful park, Moraine Hills State Park, where many kilometers of walking paths stretch, connected to the Stratton Lock and Dam.