How many people live in the US?
Updated annually
In 2025, there were about 341.8 million living in the US. That makes the US the third-most populous country in the world, home to 4.2% or roughly 1 in every 24 people on the planet. The population count guides political representation and resource allocation.
342M
population of the US (2025)
4.2%
share of the world population (2025)
While the country’s population has grown for over a century, the pace has recently slowed — a trend driven by lower birth rates, aging, and shifting immigration patterns. Between 2024 and 2025, the US population grew by 1.78 million people.
About 341.8 million people lived in the US in 2025. That's 4.5 times more than in 1900.
Population estimates
What are the age demographics of the US?
The US population has also been aging. Between 2014 and 2024 the number of people 65 or older increased by 15 million. Meanwhile, the number of people younger than 18 decreased by 460,700. As of 2024, people 65 and over accounted for 18% of the population while children accounted for 21.6%.
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Between 2014 and 2024, the share of people 65 or older increased by 3.5 percentage points.
Population estimates by age group
What are the racial and ethnic demographics of the US?
The nation’s racial and ethnic makeup has shifted as the population has grown. Between 2014 and 2024, the Hispanic population increased by 13 million, reaching 68.1 million people. Over the same period, the non-Hispanic white population declined by about 2.37 million.
Between 2014 and 2024, the Hispanic population grew from 55.1 million to 68.1 million.
Population estimates by race or ethnicity
Which state has the highest population and what is the least populated state?
In 2025, California topped the list with 39.4 million residents — that’s about 1 in 9 people in the country. Wyoming was the least-populated state with 588,800 people.
Just four states accounted for over a third of the US population. In addition to California, the other states include Texas (31.7 million), Florida (23.5 million), and New York (20 million).
In 2025, California was the most populous state with 39.4 million people.
Population estimates
Which county and city are the most populous?
The nation’s most populous city was New York, home to 8.48 million people in 2024. That’s about one in 40 people in the US.
The nation’s most populous county was Los Angeles County in California, which was home to 9.76 million people in 2024. That’s about one in 35 people nationwide.
Population rankings of states and cities
| 1. | California | 39,355,309 |
| 2. | Texas | 31,709,821 |
| 3. | Florida | 23,462,518 |
| 4. | New York | 20,002,427 |
| 5. | Pennsylvania | 13,059,432 |
| 6. | Illinois | 12,719,141 |
| 7. | Ohio | 11,900,510 |
| 8. | Georgia | 11,302,748 |
| 9. | North Carolina | 11,197,968 |
| 10. | Michigan | 10,127,884 |
Keep exploring
Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
