White to Non-White Racial Dissimilarity (5-year estimate) Index for Nowata County, OK was 22.72% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Nowata County, OK reached a record high of 45.10 in January of 2010 and a record low of 13.56 in January of 2014. 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 Nowata County, OK - last updated from the United States Federal Reserve on May of 2024.