White to Non-White Racial Dissimilarity (5-year estimate) Index for Jefferson County, ID was 28.70% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Jefferson County, ID reached a record high of 32.95 in January of 2015 and a record low of 15.61 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 Jefferson County, ID - last updated from the United States Federal Reserve on May of 2024.