Working Age Population: Aged 15-64: All for the United States was 207135055.67446 Persons in January of 2022, according to the United States Federal Reserve. Historically, Working Age Population: Aged 15-64: All for the United States reached a record high of 207135055.67446 in January of 2022 and a record low of 135361158.07636 in January of 1977. Trading Economics provides the current actual value, an historical data chart and related indicators for Working Age Population: Aged 15-64: All for the United States - last updated from the United States Federal Reserve on April of 2024.