United States of America Population Pyramid 2015
United States of America in 2015
The population of the United States of America in 2015 was 326,126,497. A decade earlier, in 2005, the population was 295,716,664; it has grown by 10.3% since.
Half of the population was younger than 37.5 years; 19.2% were children under 15 and 14.3% were 65 or older. The pyramid is stationary: cohort sizes are roughly even through the younger ages, reflecting fertility close to replacement level and slow population change.
The bulge of cohorts born between 1946 and 1964 — the post-war baby boom — is the defining feature of the United States pyramid, visible as it moves up the age scale over the decades.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
The fertility rate of the United States of America was 1.62 births per woman in 2023, under the 2.1 needed to replace each generation.
Source: World Bank World Development Indicators, latest available year.
Life expectancy at birth was 78.4 years in 2023: 81.1 for women and 75.8 for men.
Source: World Bank World Development Indicators, latest available year.
48,855,624 immigrants live in United States of America, 14.1% of the population.
| Mexico | 11,279,561 |
| India | 3,165,238 |
| China | 2,488,775 |
| Philippines | 2,263,697 |
| Puerto Rico | 1,924,799 |
3,168,477 people born in United States of America live in other countries.
| Mexico | 823,502 |
| Canada | 256,571 |
| United Kingdom | 243,570 |
| Germany | 152,501 |
| Puerto Rico | 144,149 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| United States of America | 326,126,497 | 37.5 | |
| Canada | 35,962,234 | 40.6 |
