White to Non-White Racial Dissimilarity (5-year estimate) Index for Grays Harbor County, WA was 26.78% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Grays Harbor County, WA reached a record high of 34.54 in January of 2010 and a record low of 24.45 in January of 2018. 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 Grays Harbor County, WA - last updated from the United States Federal Reserve on May of 2024.