Republic of Korea Population Pyramid 2025
Republic of Korea in 2025
As of 2025, the Republic of Korea counted 51,667,030 inhabitants. Over the previous ten years the population grew by 1.3%, up from 50,983,911 in 2015.
Half of the population was younger than 46.7 years; 10.2% were children under 15 and 20.3% were 65 or older. This is a constrictive pyramid — its base is narrower than its middle, the signature of sustained low birth rates and population ageing.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
The fertility rate of the Republic of Korea was 0.72 births per woman in 2023, under the 2.1 needed to replace each generation.
Source: World Bank World Development Indicators, latest available year.
Life expectancy at birth was 83.4 years in 2023: 86.4 for women and 80.6 for men.
Source: World Bank World Development Indicators, latest available year.
1,618,971 immigrants live in Republic of Korea, 3.1% of the population.
| China | 756,684 |
| Viet Nam | 260,609 |
| Thailand | 199,861 |
| Uzbekistan | 59,361 |
| United States of America | 53,226 |
2,028,575 people born in Republic of Korea live in other countries.
| United States of America | 1,083,174 |
| Japan | 393,944 |
| Canada | 151,409 |
| Australia | 114,174 |
| China | 65,073 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| Republic of Korea | 51,667,030 | 46.7 | |
| Dem. People's Republic of Korea | 26,571,037 | 37.6 | |
| Taiwan | 23,112,793 | 45.8 | |
| China, Hong Kong SAR | 7,396,076 | 48.4 | |
| Mongolia | 3,517,100 | 27.9 |





