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

Japan vs Viet Nam: population pyramids in 2027

2027Swap

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 2027, Japan has a population of 122 million and Viet Nam 102.4 million; Japan is about 1.2 times the size of Viet Nam.

The share aged 65 and over is 30.2% in Japan and 10.1% in Viet Nam, 20.1 points higher in Japan. The median age is 51.3 years in Japan and 35.1 years in Viet Nam.

The total fertility rate is 1.24 in Japan and 1.85 in Viet Nam, both below the replacement level of about 2.1. Life expectancy at birth is 85.3 years in Japan and 75.2 years in Viet Nam.

By 2050, the population of Japan is projected to shrink by 13.9% and that of Viet Nam to grow by 7.4% compared with 2027.

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 (2027)

JapanViet Nam
Population122 million102.4 million
Aged 0–1411.0%22.2%
Aged 15–6458.8%67.7%
Aged 65+30.2%10.1%
Median age51.3 yrs35.1 yrs
Old-age dependency51.414.9
Total fertility rate1.241.85
Life expectancy85.3 yrs75.2 yrs
Population growth-0.58%+0.53%
Net migration (per year)+127,401-42,913
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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