Estimate, Median Age by Sex, Total Population (5-year estimate) in Payette County, ID was 40.00000 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 Payette County, ID reached a record high of 40.40000 in January of 2019 and a record low of 36.40000 in January of 2011. 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 Payette County, ID - last updated from the United States Federal Reserve on May of 2024.