White to Non-White Racial Dissimilarity (5-year estimate) Index for Washington County, CO was 4.25% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Washington County, CO reached a record high of 35.89 in January of 2017 and a record low of 3.19 in January of 2021. 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 Washington County, CO - last updated from the United States Federal Reserve on May of 2024.