High School Graduate or Higher (5-year estimate) in Knox County, TX was 81.80% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Knox County, TX reached a record high of 82.30 in January of 2017 and a record low of 75.30 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 Knox County, TX - last updated from the United States Federal Reserve on May of 2024.