White to Non-White Racial Dissimilarity (5-year estimate) Index for Madera County, CA was 50.53% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Madera County, CA reached a record high of 50.53 in January of 2022 and a record low of 43.13 in January of 2009. 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 Madera County, CA - last updated from the United States Federal Reserve on May of 2024.