Population for United States was 329.06492 Mil. of Persons in January of 2019, according to the United States Federal Reserve. Historically, Population for United States reached a record high of 329.06492 in January of 2019 and a record low of 155.58397 in January of 1950. Trading Economics provides the current actual value, an historical data chart and related indicators for Population for United States - last updated from the United States Federal Reserve on March of 2024.