White to Non-White Racial Dissimilarity (5-year estimate) Index for San Diego County, CA was 41.67% in January of 2024, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for San Diego County, CA reached a record high of 45.14 in January of 2009 and a record low of 41.67 in January of 2024. 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 San Diego County, CA - last updated from the United States Federal Reserve on April of 2026.