White to Non-White Racial Dissimilarity (5-year estimate) Index for Ottawa County, KS was 5.85% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Ottawa County, KS reached a record high of 17.19 in January of 2013 and a record low of 0.56 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 Ottawa County, KS - last updated from the United States Federal Reserve on May of 2024.