United States of America Population Pyramid 1973
United States of America in 1973
As of 1973, the United States of America counted 215,006,551 inhabitants. A decade earlier, in 1963, the population was 189,825,226; it has grown by 13.3% since. With a median age of 28.3 years, the United States of America had a youth dependency ratio of 42.0 and an old-age dependency ratio of 15.8 per 100 people of working age. This is a stationary pyramid — similar numbers in each age group up to the older cohorts, the signature of near-replacement fertility.
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.
