Seoul has a population of 10,349,312, making it the 1st largest place we list in South Korea.
Seoul holds 20.1% of South Korea's 51,600,388 people.
10,349,312
population
#1
in South Korea
Nearby in size
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.