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

Viet Nam vs Japan: population pyramids in 2031

2031Swap

Viet NamJapan

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.

Viet Nam and Japan compared

In 2031, Viet Nam has a population of 104.5 million and Japan 119.1 million; Japan is about 1.1 times the size of Viet Nam.

The share aged 65 and over is 12.0% in Viet Nam and 31.2% in Japan, 19.2 points higher in Japan. The median age is 36.9 years in Viet Nam and 52.6 years in Japan.

The total fertility rate is 1.81 in Viet Nam and 1.27 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 75.8 years in Viet Nam and 85.9 years in Japan.

By 2050, the population of Viet Nam is projected to grow by 5.3% and that of Japan to shrink by 11.8% compared with 2031.

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

Figures from 2024 are UN medium-variant projections.

Key figures (2031)

Viet NamJapan
Population104.5 million119.1 million
Aged 0–1419.7%10.3%
Aged 15–6468.3%58.5%
Aged 65+12.0%31.2%
Median age36.9 yrs52.6 yrs
Old-age dependency17.653.4
Total fertility rate1.811.27
Life expectancy75.8 yrs85.9 yrs
Population growth+0.45%-0.62%
Net migration (per year)-33,326+124,022
GDP$515B (2025)$4.44T (2025)
GDP per person$5,066 (2025)$36K (2025)
Unemployment1.5% (2025)2.5% (2025)

Economic figures are the latest year published for each country.

Compare other years