๐Ÿ‡ฏ๐Ÿ‡ต Japanvs๐Ÿ‡ฐ๐Ÿ‡ท South Korea

Total Population
122,427,730
51,600,389
Japan is 2.4ร— South Korea
Median age
51.2 years
47.2 years
4.0 years apart
Elderly Population Percentage
30.20%
21.43%
8.8 percentage points apart
Growth Rate
-0.55%
-0.13%
0.42 percentage points apart

Age composition in 2026:

๐Ÿ‡ฏ๐Ÿ‡ต Japan ๐Ÿ‡ฐ๐Ÿ‡ท South Korea
Japan South Korea
Young Population 11.05%13,524,677 9.82%5,065,881
Working Age Population 58.76%71,934,032 68.75%35,474,901
Elderly Population 30.20%36,969,021 21.43%11,059,607

In 2026, the median age is 51.2 years in Japan and 47.2 years in South Korea.Japan already reached South Koreaโ€™s current median age in 2016, about 10 years ahead in population aging.

The total population of Japan peaks in 2009 at 128,192,471.The total population of South Korea peaks in 2020 at 51,858,481.

By 2050, the dependency ratio of Japan will be 95.0%, and 37.48% of the population will be elderly.By 2050, the dependency ratio of South Korea will be 90.5%, and 39.68% of the population will be elderly.

Japan South Korea
Demographic dividend (dependency ratio below 50%) 1963โ€“2003 1987โ€“2029
Aging society (65+ reaches 7%) 1970 2000 30 years later
Aged society (65+ reaches 14%) 1994 2018 24 years later
Super-aged society (65+ reaches 20%) 2005 2025 20 years later