Working Age Population: Aged 55-64: All for the United States was 41240333.20673 Persons in December of 2023, according to the United States Federal Reserve. Historically, Working Age Population: Aged 55-64: All for the United States reached a record high of 42416458.80938 in May of 2020 and a record low of 20395903.00999 in January of 1977. Trading Economics provides the current actual value, an historical data chart and related indicators for Working Age Population: Aged 55-64: All for the United States - last updated from the United States Federal Reserve on March of 2024.