White to Non-White Racial Dissimilarity (5-year estimate) Index for St. Clair County, AL was 21.29% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for St. Clair County, AL reached a record high of 31.68 in January of 2013 and a record low of 21.29 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for White to Non-White Racial Dissimilarity (5-year estimate) Index for St. Clair County, AL - last updated from the United States Federal Reserve on May of 2024.