High School Graduate or Higher (5-year estimate) in San Mateo County, CA was 90.60% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in San Mateo County, CA reached a record high of 90.80 in January of 2021 and a record low of 88.30 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in San Mateo County, CA - last updated from the United States Federal Reserve on May of 2024.