White to Non-White Racial Dissimilarity (5-year estimate) Index for Harford County, MD was 40.43% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Harford County, MD reached a record high of 44.53 in January of 2010 and a record low of 40.43 in January of 2022. 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 Harford County, MD - last updated from the United States Federal Reserve on May of 2024.