Estimate, Median Age by Sex, Total Population (5-year estimate) in Livingston County, MO was 39.20000 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 Livingston County, MO reached a record high of 42.00000 in January of 2014 and a record low of 39.10000 in January of 2021. 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 Livingston County, MO - last updated from the United States Federal Reserve on May of 2024.