White to Non-White Racial Dissimilarity (5-year estimate) Index for Mendocino County, CA was 25.56% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Mendocino County, CA reached a record high of 31.43 in January of 2010 and a record low of 23.24 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 Mendocino County, CA - last updated from the United States Federal Reserve on May of 2024.