World Population PyramidsPopulation pyramids and indicators by country and year日本語

United States of America vs Japan: population pyramids in 2020

2020Swap

United States of AmericaJapan

1%0.75%0.5%0.25%0%0.25%0.5%0.75%1%0102030405060708090100MaleFemale

Each bar is the share of the total population at that single year of age (men left, women right), so countries of different sizes can be compared.

United States of America and Japan compared

In 2020, the United States of America has a population of 339.1 million and Japan 126.5 million; the United States of America is about 2.7 times the size of Japan.

The share aged 65 and over is 15.9% in the United States of America and 28.7% in Japan, 12.8 points higher in Japan. The median age is 38.1 years in the United States of America and 48.4 years in Japan.

The total fertility rate is 1.62 in the United States of America and 1.30 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 77.0 years in the United States of America and 84.7 years in Japan.

By 2050, the population of the United States of America is projected to grow by 12.1% and that of Japan to shrink by 16.9% compared with 2020.

GDP per person is $90K in the United States of America (2025) and $36K in Japan (2025).

Key figures (2020)

United States of AmericaJapan
Population339.1 million126.5 million
Aged 0–1418.5%12.3%
Aged 15–6465.6%59.0%
Aged 65+15.9%28.7%
Median age38.1 yrs48.4 yrs
Old-age dependency24.248.6
Total fertility rate1.621.30
Life expectancy77.0 yrs84.7 yrs
Population growth+0.17%-0.43%
Net migration (per year)+329,769+42,001
GDP$30.8T (2025)$4.44T (2025)
GDP per person$90K (2025)$36K (2025)
Unemployment4.2% (2025)2.5% (2025)

Economic figures are the latest year published for each country.

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