Mercer County

Mercer County is a county in Illinois, United States. The population in Mercer County was 15,504 in 2022. The median age in Mercer County was 44.6 in 2021. The median income in Mercer County was $32,881 in 2021. The unemployment rate in Mercer County was 3.6% in 2023. The percentage of people with obesity in Mercer County was 36.6% in 2021. The percentage of people who binge drink in Mercer County was 18.3% in 2021. The percentage of people who smoke in Mercer County was 18.4% in 2021.