Sejong-si · South Korea
Sejong population
394,630people · latest figure
Sejong has a population of 394,630, making it the 25th largest place we list in South Korea. It is in Sejong-si.
Sejong holds 0.76% of South Korea's 51,600,388 people. Seoul, the largest place we list there, is 26 times its size.
394,630
population
#25
in South Korea
Nearby in size
| Place | Region | Population |
|---|---|---|
| Uijeongbu-si | Gyeonggi-do | 479,141 |
| Masan | Gwangju | 434,371 |
| Gumi | Gyeongsangbuk-do | 404,691 |
| Pyeongtaek | Gyeonggi-do | 364,694 |
| Yangsan | Gyeongsangnam-do | 358,074 |
| Gwangmyeong | Gyeonggi-do | 357,545 |
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.