Jefferson County

County in Illinois, United States of America, North America

Jefferson County is a county in Illinois, United States. The population in Jefferson County was 36,400 in 2022. The median age in Jefferson County was 41.2 in 2021. The median income in Jefferson County was $30,010 in 2021. The unemployment rate in Jefferson County was 4% in 2023. The percentage of people with obesity in Jefferson County was 35.2% in 2021. The percentage of people who binge drink in Jefferson County was 17.6% in 2021. The percentage of people who smoke in Jefferson County was 19% in 2021.
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