White to Non-White Racial Dissimilarity (5-year estimate) Index for San Miguel County, NM was 18.68% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for San Miguel County, NM reached a record high of 21.85 in January of 2019 and a record low of 15.72 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 San Miguel County, NM - last updated from the United States Federal Reserve on May of 2024.