White to Non-White Racial Dissimilarity (5-year estimate) Index for Clarke County, IA was 38.61% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Clarke County, IA reached a record high of 51.52 in January of 2018 and a record low of 27.78 in January of 2013. 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 Clarke County, IA - last updated from the United States Federal Reserve on May of 2024.