White to Non-White Racial Dissimilarity (5-year estimate) Index for Lyon County, IA was 13.69% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Lyon County, IA reached a record high of 29.89 in January of 2013 and a record low of 2.29 in January of 2020. 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 Lyon County, IA - last updated from the United States Federal Reserve on May of 2024.