White to Non-White Racial Dissimilarity (5-year estimate) Index for Mercer County, MO was 5.10% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Mercer County, MO reached a record high of 29.13 in January of 2014 and a record low of 0.53 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 Mercer County, MO - last updated from the United States Federal Reserve on May of 2024.