Estimate, Median Age by Sex, Total Population (5-year estimate) in Montgomery County, IA was 43.30000 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 Montgomery County, IA reached a record high of 45.20000 in January of 2012 and a record low of 42.60000 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 Montgomery County, IA - last updated from the United States Federal Reserve on May of 2024.