White to Non-White Racial Dissimilarity (5-year estimate) Index for Butte County, CA was 21.39% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Butte County, CA reached a record high of 30.93 in January of 2010 and a record low of 21.39 in January of 2022. 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 Butte County, CA - last updated from the United States Federal Reserve on May of 2024.