Estimate, Median Age by Sex, Total Population (5-year estimate) in Marion County, GA was 43.80000 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 Marion County, GA reached a record high of 45.20000 in January of 2018 and a record low of 39.20000 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 Marion County, GA - last updated from the United States Federal Reserve on May of 2024.