Working Age Population: Aged 15-74: All for the United States was 243532600.00000 Persons in April of 2024, according to the United States Federal Reserve. Historically, Working Age Population: Aged 15-74: All for the United States reached a record high of 243532600.00000 in April of 2024 and a record low of 159912739.88917 in January of 1981. Trading Economics provides the current actual value, an historical data chart and related indicators for Working Age Population: Aged 15-74: All for the United States - last updated from the United States Federal Reserve on May of 2024.