Estimate, Median Age by Sex, Total Population (5-year estimate) in Graves County, KY was 39.90000 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 Graves County, KY reached a record high of 40.40000 in January of 2013 and a record low of 39.60000 in January of 2020. 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 Graves County, KY - last updated from the United States Federal Reserve on May of 2024.