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

Japan vs Viet Nam: population pyramids in 1951

1951Swap

JapanViet Nam

2%1.5%1%0.5%0%0.5%1%1.5%2%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 1951, Japan has a population of 87.2 million and Viet Nam 25.4 million; Japan is about 3.4 times the size of Viet Nam.

The share aged 65 and over is 4.9% in Japan and 4.2% in Viet Nam, 0.7 points higher in Japan. The median age is 22.4 years in Japan and 24.0 years in Viet Nam.

The total fertility rate is 3.23 in Japan and 4.65 in Viet Nam, both above the replacement level of about 2.1. Life expectancy at birth is 61.0 years in Japan and 48.7 years in Viet Nam.

By 2050, the population of Japan is projected to grow by 20.5% and that of Viet Nam to grow by 333.6% compared with 1951.

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

Key figures (1951)

JapanViet Nam
Population87.2 million25.4 million
Aged 0–1435.1%33.1%
Aged 15–6460.0%62.8%
Aged 65+4.9%4.2%
Median age22.4 yrs24.0 yrs
Old-age dependency8.26.6
Total fertility rate3.234.65
Life expectancy61.0 yrs48.7 yrs
Population growth+1.50%+1.80%
Net migration (per year)-54,567+0
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.

Compare other years