Estimate, Median Age by Sex, Total Population (5-year estimate) in Fayette County, OH was 41.20000 Years of Age in January of 2022, according to the United States Federal Reserve. Historically, Estimate, Median Age by Sex, Total Population (5-year estimate) in Fayette County, OH reached a record high of 41.40000 in January of 2019 and a record low of 38.40000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Estimate, Median Age by Sex, Total Population (5-year estimate) in Fayette County, OH - last updated from the United States Federal Reserve on May of 2024.