Population Estimate, Total, Not Hispanic or Latino, American Indian and Alaska Native Alone (5-year estimate) in St. Clair County, IL was 716.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, American Indian and Alaska Native Alone (5-year estimate) in St. Clair County, IL reached a record high of 716.00000 in January of 2022 and a record low of 189.00000 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, American Indian and Alaska Native Alone (5-year estimate) in St. Clair County, IL - last updated from the United States Federal Reserve on May of 2024.