Estimate, Median Age by Sex, Total Population (5-year estimate) in Litchfield County, CT was 47.60000 Years of Age in January of 2021, according to the United States Federal Reserve. Historically, Estimate, Median Age by Sex, Total Population (5-year estimate) in Litchfield County, CT reached a record high of 47.60000 in January of 2021 and a record low of 42.50000 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 Litchfield County, CT - last updated from the United States Federal Reserve on May of 2024.