High School Graduate or Higher (5-year estimate) in Custer County, OK was 88.10% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Custer County, OK reached a record high of 88.20 in January of 2021 and a record low of 83.10 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Custer County, OK - last updated from the United States Federal Reserve on May of 2024.