White to Non-White Racial Dissimilarity (5-year estimate) Index for Palo Alto County, IA was 19.68% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Palo Alto County, IA reached a record high of 38.43 in January of 2018 and a record low of 3.05 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 Palo Alto County, IA - last updated from the United States Federal Reserve on May of 2024.