Estimate, Median Age by Sex, Total Population (5-year estimate) in Chester County, SC was 41.80000 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 Chester County, SC reached a record high of 42.00000 in January of 2019 and a record low of 39.30000 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 Chester County, SC - last updated from the United States Federal Reserve on May of 2024.