White to Non-White Racial Dissimilarity (5-year estimate) Index for Lucas County, IA was 28.41% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Lucas County, IA reached a record high of 59.13 in January of 2016 and a record low of 20.76 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 Lucas County, IA - last updated from the United States Federal Reserve on May of 2024.