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

Republic of Korea vs Japan: population pyramids in 2049

2049Swap

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 2049, the Republic of Korea has a population of 45.7 million and Japan 105.7 million; Japan is about 2.3 times the size of the Republic of Korea.

The share aged 65 and over is 39.0% in the Republic of Korea and 37.1% in Japan, 2.0 points higher in the Republic of Korea. The median age is 57.1 years in the Republic of Korea and 53.6 years in Japan.

The total fertility rate is 1.02 in the Republic of Korea and 1.35 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 87.2 years in the Republic of Korea and 88.3 years in Japan.

By 2050, the population of the Republic of Korea is projected to shrink by 1.0% and that of Japan to shrink by 0.7% compared with 2049.

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 (2049)

Republic of KoreaJapan
Population45.7 million105.7 million
Aged 0–147.8%11.2%
Aged 15–6453.1%51.7%
Aged 65+39.0%37.1%
Median age57.1 yrs53.6 yrs
Old-age dependency73.471.7
Total fertility rate1.021.35
Life expectancy87.2 yrs88.3 yrs
Population growth-0.98%-0.64%
Net migration (per year)+13,494+116,311
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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