Estimate, Median Age by Sex, Total Population (5-year estimate) in Tolland County, CT was 37.50000 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 Tolland County, CT reached a record high of 38.30000 in January of 2012 and a record low of 37.50000 in January of 2018. 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 Tolland County, CT - last updated from the United States Federal Reserve on May of 2024.