What is the Population of United States?
Facts last checked 31 August 2026.
United States has a population of approximately 340,110,988 people, making it the 3rd most populated country of the 196 countries covered on this site — around 4.25% of the world's population. With a land area of 9,525,067 km², the population density is roughly 36 people per km².
| Population | 340,110,988 |
|---|---|
| Population rank | 3rd of 196 |
| Share of world population | 4.25% |
| Area | 9,525,067 km² |
| Population density | 36 / km² |
| Demonym | American |
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Population of United States — FAQ
What is the population of United States?
The population of United States is approximately 340,110,988 (340.1 million) based on the latest available data.
What is the population of United States in 2026?
As of 2026, the estimated population of United States is approximately 340,110,988 people. United States is the 3rd most populated country in our dataset.
How many people live in United States?
Approximately 340,110,988 people live in United States, making it the 3rd most populated country out of 196 covered on this site.
How does United States rank by population?
United States is the 3rd most populated of the 196 countries covered on this site, with a world population share of 4.25%.
What is the population density of United States?
United States has a population density of roughly 36 people per km², based on a land area of 9,525,067 km².
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