High School Graduate or Higher (5-year estimate) in Oliver County, ND was 94.60% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Oliver County, ND reached a record high of 94.60 in January of 2022 and a record low of 84.50 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Oliver County, ND - last updated from the United States Federal Reserve on May of 2024.