St. Clair County

St. Clair County is a county in Missouri, United States. The population in St. Clair County was 9,576 in 2022. The median age in St. Clair County was 48.7 in 2021. The median income in St. Clair County was $23,116 in 2021. The unemployment rate in St. Clair County was 3.5% in 2023. The percentage of people with obesity in St. Clair County was 38.7% in 2021. The percentage of people who binge drink in St. Clair County was 17.1% in 2021. The percentage of people who smoke in St. Clair County was 24.8% in 2021.