White to Non-White Racial Dissimilarity (5-year estimate) Index for Marshall County, OK was 50.20% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Marshall County, OK reached a record high of 55.90 in January of 2014 and a record low of 44.28 in January of 2012. 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 Marshall County, OK - last updated from the United States Federal Reserve on May of 2024.