White to Non-White Racial Dissimilarity (5-year estimate) Index for Polk County, AR was 46.13% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Polk County, AR reached a record high of 58.26 in January of 2011 and a record low of 37.25 in January of 2018. 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 Polk County, AR - last updated from the United States Federal Reserve on May of 2024.