Estimate, Median Age by Sex, Total Population (5-year estimate) in Dickinson County, IA was 47.90000 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 Dickinson County, IA reached a record high of 48.80000 in January of 2016 and a record low of 46.50000 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 Dickinson County, IA - last updated from the United States Federal Reserve on May of 2024.