High School Graduate or Higher (5-year estimate) in Grafton County, NH was 93.20% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Grafton County, NH reached a record high of 93.20 in January of 2022 and a record low of 90.90 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Grafton County, NH - last updated from the United States Federal Reserve on May of 2024.