Estimate, Median Age by Sex, Total Population (5-year estimate) in Nodaway County, MO was 33.70000 Years of Age in January of 2024, according to the United States Federal Reserve. Historically, Estimate, Median Age by Sex, Total Population (5-year estimate) in Nodaway County, MO reached a record high of 33.90000 in January of 2023 and a record low of 28.10000 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 Nodaway County, MO - last updated from the United States Federal Reserve on April of 2026.