White to Non-White Racial Dissimilarity (5-year estimate) Index for Hardin County, IA was 17.14% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Hardin County, IA reached a record high of 31.27 in January of 2016 and a record low of 16.36 in January of 2012. 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 Hardin County, IA - last updated from the United States Federal Reserve on May of 2024.