White to Non-White Racial Dissimilarity (5-year estimate) Index for Modoc County, CA was 17.85% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Modoc County, CA reached a record high of 20.32 in January of 2017 and a record low of 11.31 in January of 2019. 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 Modoc County, CA - last updated from the United States Federal Reserve on May of 2024.