White to Non-White Racial Dissimilarity (5-year estimate) Index for Washington County, AR was 45.59% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Washington County, AR reached a record high of 45.94 in January of 2021 and a record low of 39.35 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 Washington County, AR - last updated from the United States Federal Reserve on May of 2024.