United States - Population was 332584.00000 Thous. in October of 2021, according to the United States Federal Reserve. Historically, United States - Population reached a record high of 332584.00000 in October of 2021 and a record low of 143143.00000 in January of 1947. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Population - last updated from the United States Federal Reserve on April of 2024.