Estimate, Median Age by Sex, Total Population (5-year estimate) in Wallace County, KS was 43.10000 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 Wallace County, KS reached a record high of 48.20000 in January of 2010 and a record low of 40.60000 in January of 2017. 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 Wallace County, KS - last updated from the United States Federal Reserve on May of 2024.