White to Non-White Racial Dissimilarity (5-year estimate) Index for Marengo County, AL was 29.22% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Marengo County, AL reached a record high of 34.15 in January of 2021 and a record low of 19.65 in January of 2012. 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 Marengo County, AL - last updated from the United States Federal Reserve on May of 2024.