McHenry is located in McHenry County. The region is located on the body of water McCullom Lake. About 27,135 people live here (as of 2020). Between 2010 and 2020, the population grew from 26,992 to 27,135. The region is at 247 meters above sea level. The area covers about 39.0 square kilometers. There are about 1.062 streets in McHenry. The region was founded in 1872. The postal codes are 60050–60051. The dialing code is 815. The name originates from William McHenry (American politician) McHenry is city in Illinois, United States. Among other things, McHenry has public Transport, restaurants, cafés, supermarkets, clothing Stores, schools, banks, hairdressers, dentists, doctors and pharmacies. More information at
www.ci.mchenry.il.us.