United States of America Population Pyramid 2045

United States of America
2045
Population: 376,106,472

Year

-5 -1   2045  +1 +5

Country

A B C D E F G H I J K L M N O P Q R S T U V W Y Z
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United States of America in 2045

United Nations projections (medium variant) put the population of the United States of America at 376,106,473 in 2045. Ten years before, in 2035, the projected population is 363,284,716 — 3.5% lower.

With a projected median age of 42.2 years, the United States of America would have a youth dependency ratio of 26.0 and an old-age dependency ratio of 36.5 per 100 people of working age. The narrow base of the pyramid marks a constrictive age structure: fertility below replacement level and a rising share of older people.

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.

Population
376,106,473
Median age
42.2
0-14 %
16.0%
65+ %
22.5%
Child dependency
26.0
Old-age dependency
36.5
Pyramid shape
Population 2050
380,846,910
Population 2100
421,278,890
Births per woman
Total fertility rate, 1960–2023
1234
1960Replacement level (2.1)2023 · 1.62

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
Years, 1960–2023
Total Women Men
60708090
19602023 · 78.4

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.

People supported per 100 workers
Dependency ratios, 1950–2100
Children Older adults
15304560
19502100
Where immigrants come from (2024)

48,855,624 immigrants live in United States of America, 14.1% of the population.

Mexico11,279,561
India3,165,238
China2,488,775
Philippines2,263,697
Puerto Rico1,924,799
Where emigrants live (2024)

3,168,477 people born in United States of America live in other countries.

Mexico823,502
Canada256,571
United Kingdom243,570
Germany152,501
Puerto Rico144,149
Explore
Immigration statistics Origin of migrant stocks map

Source: United Nations International Migrant Stock 2024.

Country Population Median age Relative size
United States of America 376,106,473 42.2
Canada 44,850,096 45.6
How many people are projected to live in the United States of America in 2045?
The United States of America is projected to have a population of 376,106,473 in 2045.
Is the United States of America's population growing or shrinking?
Yes, growing: up 3.5% from 2035, with a projected population of 380,846,910 in 2050.
What is the median age in the United States of America?
The median age in the United States of America is 42.2 years — half the population is younger, half older.
What share of the United States of America's population is over 65 or under 15?
22.5% of the United States of America's population is 65 or older, and 16.0% is under 15.
What shape is the United States of America's population pyramid, and what does it mean?
The United States of America's pyramid is constrictive — narrower at the base than the middle, the signature of sustained low fertility and population ageing.

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