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

Japan vs Viet Nam: population pyramids in 2042

2042Swap

JapanViet Nam

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.

Japan and Viet Nam compared

In 2042, Japan has a population of 110.8 million and Viet Nam 108.9 million; the two are about the same size.

The share aged 65 and over is 35.8% in Japan and 16.3% in Viet Nam, 19.5 points higher in Japan. The median age is 54.0 years in Japan and 39.4 years in Viet Nam.

The total fertility rate is 1.32 in Japan and 1.77 in Viet Nam, both below the replacement level of about 2.1. Life expectancy at birth is 87.4 years in Japan and 77.6 years in Viet Nam.

By 2050, the population of Japan is projected to shrink by 5.2% and that of Viet Nam to grow by 1.0% compared with 2042.

GDP per person is $36K in Japan (2025) and $5,066 in Viet Nam (2025).

Figures from 2024 are UN medium-variant projections.

Key figures (2042)

JapanViet Nam
Population110.8 million108.9 million
Aged 0–1410.6%17.5%
Aged 15–6453.6%66.2%
Aged 65+35.8%16.3%
Median age54.0 yrs39.4 yrs
Old-age dependency66.724.6
Total fertility rate1.321.77
Life expectancy87.4 yrs77.6 yrs
Population growth-0.65%+0.25%
Net migration (per year)+120,719-29,388
GDP$4.44T (2025)$515B (2025)
GDP per person$36K (2025)$5,066 (2025)
Unemployment2.5% (2025)1.5% (2025)

Economic figures are the latest year published for each country.

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