Working Age Population: Aged 15-24: All for the United States was 39557794.99308 Persons in December of 2023, according to the United States Federal Reserve. Historically, Working Age Population: Aged 15-24: All for the United States reached a record high of 39557794.99308 in December of 2023 and a record low of 31927010.18588 in December of 1989. Trading Economics provides the current actual value, an historical data chart and related indicators for Working Age Population: Aged 15-24: All for the United States - last updated from the United States Federal Reserve on March of 2024.