What is mchenry county population?

McHenry County is a county located in the northeastern part of the state of Illinois, in the United States. According to the United States Census Bureau, the county has a total area of 611.08 square miles (1,580.6 km2), of which 603.16 square miles (1,562.0 km2) is land and 7.92 square miles (20.5 km2) is water. As of the 2020 Census, the population of McHenry County is approximately 309,783 people, making it the sixth-most populous county in Illinois. The county seat is the city of Woodstock. The population density of McHenry County is 512 people per square mile (198/km2). The median household income in the county is $88,047, and the median age of its residents is 40.1 years. The largest city in McHenry County is Crystal Lake, with a population of approximately 41,000 people.