Republic of Korea Population Pyramid 1951
Republic of Korea in 1951
The population of the Republic of Korea in 1951 was 19,868,990. Half of the population was younger than 18.7 years; 42.8% were children under 15 and 2.7% were 65 or older.
This is an expansive pyramid — each cohort of children is larger than the one above it, the signature of high birth rates and rapid growth.
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 | 19,868,990 | 18.7 | |
| Dem. People's Republic of Korea | 10,583,569 | 17.3 | |
| Taiwan | 7,862,796 | 18.7 | |
| China, Hong Kong SAR | 2,069,481 | 23.9 | |
| Mongolia | 794,324 | 24.7 |





