White to Non-White Racial Dissimilarity (5-year estimate) Index for Columbia County, AR was 34.46% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Columbia County, AR reached a record high of 36.22 in January of 2021 and a record low of 23.47 in January of 2016. 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 Columbia County, AR - last updated from the United States Federal Reserve on May of 2024.