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

Republic of Korea vs Japan: population pyramids in 2100

2100▶Swap

Republic of KoreaJapan

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.

Republic of Korea and Japan compared

In 2100, the Republic of Korea has a population of 21.5 million and Japan 76.2 million; Japan is about 3.5 times the size of the Republic of Korea.

The share aged 65 and over is 44.1% in the Republic of Korea and 36.8% in Japan, 7.3 points higher in the Republic of Korea. The median age is 59.9 years in the Republic of Korea and 53.5 years in Japan.

The total fertility rate is 1.30 in the Republic of Korea and 1.47 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 93.1 years in the Republic of Korea and 94.4 years in Japan.

GDP per person is $36K in the Republic of Korea (2025) and $36K in Japan (2025).

Figures from 2024 are UN medium-variant projections.

Key figures (2100)

Republic of KoreaJapan
Population21.5 million76.2 million
Aged 0–148.8%11.6%
Aged 15–6447.1%51.7%
Aged 65+44.1%36.8%
Median age59.9 yrs53.5 yrs
Old-age dependency93.571.2
Total fertility rate1.301.47
Life expectancy93.1 yrs94.4 yrs
Population growth-1.45%-0.50%
Net migration (per year)-554+73,710
GDP$1.87T (2025)$4.44T (2025)
GDP per person$36K (2025)$36K (2025)
Unemployment2.7% (2025)2.5% (2025)

Economic figures are the latest year published for each country.

Compare other years