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

Republic of Korea vs Japan: population pyramids in 2035

2035Swap

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 2035, the Republic of Korea has a population of 50.4 million and Japan 116.1 million; Japan is about 2.3 times the size of the Republic of Korea.

The share aged 65 and over is 29.1% in the Republic of Korea and 32.4% in Japan, 3.3 points higher in Japan. The median age is 51.9 years in the Republic of Korea and 53.4 years in Japan.

The total fertility rate is 0.88 in the Republic of Korea and 1.29 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 85.6 years in the Republic of Korea and 86.4 years in Japan.

By 2050, the population of the Republic of Korea is projected to shrink by 10.1% and that of Japan to shrink by 9.5% compared with 2035.

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 (2035)

Republic of KoreaJapan
Population50.4 million116.1 million
Aged 0–147.7%10.1%
Aged 15–6463.3%57.6%
Aged 65+29.1%32.4%
Median age51.9 yrs53.4 yrs
Old-age dependency45.956.2
Total fertility rate0.881.29
Life expectancy85.6 yrs86.4 yrs
Population growth-0.45%-0.65%
Net migration (per year)+31,740+116,871
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.

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