High School Graduate or Higher (5-year estimate) in Marshall County, IA was 85.20% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Marshall County, IA reached a record high of 85.70 in January of 2010 and a record low of 83.50 in January of 2015. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Marshall County, IA - last updated from the United States Federal Reserve on May of 2024.