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Cities

Seoul

Seoul (10.0 million inhabitants): major city of South Korea, with country factbook, ranking and leader links.

Last updated: October 2026

About Seoul

CountrySouth Korea
Population10.0 million
CapitalYes — national capital

Source: UN World Urbanization Prospects, 2022 Revision (metropolitan agglomeration estimate). Observation date: 2022. The Bureau cross-checked major-city figures against UN WUP; smaller-city figures are presented as published and have not been individually re-verified.

What is the population of Seoul?

Seoul has a metropolitan population of 10.0 million, according to the UN World Urbanization Prospects (2022 Revision) cited on this page.

Where is Seoul located?

Seoul is in South Korea. It is the national capital of South Korea.

What is Seoul known for?

Seoul is the national capital of South Korea. As the capital, it is the country’s seat of government. The Bureau’s profile records its population and country context; see the South Korea factbook for the wider national picture.

Other cities in South Korea

BusanIncheonDaeguDaejon
South KoreaRankings

Across the Bureau

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