United States's population is estimated by the United Nations to be 340.0 million in 2021.
The population of United States grew at 0.6% in the last year and is ranked the 1st most populated country in Americas, ahead of Brazil.
United States last conducted a national census in 2020 and 100% of births in United States are recorded. Read more from the World Econcomics Population Data Quality Ratings and see how United States compares to other countries around the world and in the Americas region.
United States's data is highlighted in the table below, use the filter and sort order options to allow easy comparison with other countries.
Data source: United Nations, Washington D.C., Eurostat, Luxembourg and World Economics Research, London