White to Non-White Racial Dissimilarity (5-year estimate) Index for San Juan County, WA was 18.86% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for San Juan County, WA reached a record high of 24.17 in January of 2009 and a record low of 13.38 in January of 2016. 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 Juan County, WA - last updated from the United States Federal Reserve on May of 2024.