United States of America Population Pyramid 2021
United States of America in 2021
In 2021, the United States of America had a total population of 340,161,441 people. A decade earlier, in 2011, the population was 314,105,078; it has grown by 8.3% since. The median age was 38.5 years, and for every 100 people of working age (15–64) there were 27.8 children under 15 and 25.2 people aged 65 or over. The near-vertical sides of the pyramid indicate a stationary age structure, with births roughly balancing the passage of cohorts into older age.
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.
