Estimate, Median Age by Sex, Total Population (5-year estimate) in Oldham County, KY was 39.50000 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 Oldham County, KY reached a record high of 39.80000 in January of 2021 and a record low of 38.10000 in January of 2010. 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 Oldham County, KY - last updated from the United States Federal Reserve on May of 2024.