Seoul
South Korea · Asia
Megacity since at least 1975 capital (official capital)
See on the map Other cities in the country Wikidata
2025 data
| Population | 22,490,482 |
|---|---|
| Area | 2,255 km² |
| Density | 9,974 people/km² |
| Size | megacities, 10 million and more |
| Coordinates | 37°30′ N, 126°57′ E |
| Among the world’s cities | 10th / 1,914 |
| In Asia | 9th / 1,113 |
| In South Korea | 1st / 11 |
The coordinates are those of the population centre calculated by the UN, not of the historic centre or city hall. Ranks by population among cities with at least 300,000 inhabitants.
Population from 1975 to 2050
Area from 1975 to 2050
Source: United Nations, World Urbanization Prospects 2025 (CC BY 3.0 IGO). After 2025, projections. Cities measured as the built-up, densely inhabited area (DEGURBA method).