Population
St. Clair County has a population of 9,752 as of 2023. It is located in Missouri.
Demographics
Demographic data not available for St. Clair County.
Economics & Income
Economic data not available for St. Clair County.
Sources
All data presented on this page is sourced from official U.S. government sources and is accurate as of 2023. Data is updated annually when new estimates become available.
Population, demographics, income, poverty, and age data for St. Clair County, Missouri.
Annual population estimates for counties.
Official population counts and demographic data from the decennial census.
Data Methodology
The statistics shown are estimates from the American Community Survey (ACS) and Population Estimates Program. Margins of error apply but are not shown. For the most current and detailed data, please visit the U.S. Census Bureau website.