United States of America Population Pyramid 2020

United States of America
2020
Population: 339,436,158

Year

-5 -1   2020  +1 +5

Country

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United States of America in 2020

In 2020, the United States of America had a total population of 339,436,158 people. A decade earlier, in 2010, the population was 311,062,790; it has grown by 9.1% since. Half of the population was younger than 38.2 years; 18.4% were children under 15 and 16.1% 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.

Share of the population by age group, 1950–2100

Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.


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