United States - Population was 336306.00000 Thous. in February of 2024, according to the United States Federal Reserve. Historically, United States - Population reached a record high of 336306.00000 in February of 2024 and a record low of 175818.00000 in January of 1959. 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.