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

Japan vs Viet Nam: population pyramids in 2021

2021Swap

JapanViet Nam

1.5%1%0.5%0%0.5%1%1.5%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 2021, Japan has a population of 125.9 million and Viet Nam 98.5 million; Japan is about 1.3 times the size of Viet Nam.

The share aged 65 and over is 29.0% in Japan and 7.7% in Viet Nam, 21.3 points higher in Japan. The median age is 48.9 years in Japan and 32.2 years in Viet Nam.

The total fertility rate is 1.27 in Japan and 1.94 in Viet Nam, both below the replacement level of about 2.1. Life expectancy at birth is 84.5 years in Japan and 74.1 years in Viet Nam.

By 2050, the population of Japan is projected to shrink by 16.6% and that of Viet Nam to grow by 11.6% compared with 2021.

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

Key figures (2021)

JapanViet Nam
Population125.9 million98.5 million
Aged 0–1412.2%24.3%
Aged 15–6458.8%68.0%
Aged 65+29.0%7.7%
Median age48.9 yrs32.2 yrs
Old-age dependency49.311.4
Total fertility rate1.271.94
Life expectancy84.5 yrs74.1 yrs
Population growth-0.56%+0.80%
Net migration (per year)-34,996-5,418
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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