Population Ages 15 to 64 for the United States was 64.99733 % of Total in January of 2020, according to the United States Federal Reserve. Historically, Population Ages 15 to 64 for the United States reached a record high of 66.88005 in January of 2008 and a record low of 59.99082 in January of 1962. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Ages 15 to 64 for the United States - last updated from the United States Federal Reserve on March of 2024.