McHenry County

McHenry County is a county in Illinois, United States. The population in McHenry County was 311,747 in 2022. The median age in McHenry County was 40.4 in 2021. The median income in McHenry County was $42,409 in 2021. The unemployment rate in McHenry County was 3.7% in 2023. The percentage of people with obesity in McHenry County was 30.2% in 2021. The percentage of people who binge drink in McHenry County was 18.7% in 2021. The percentage of people who smoke in McHenry County was 12.9% in 2021.