City profile · South Korea · Asia
Sejong
Sejong-si · South Korea
City population
394,630
#25
in South Korea
#1,450
worldwide
36.592, 127.292 · 112 km from Seoul
About Sejong
Sejong is a city in Sejong-si, South Korea with a population of 394,630. It is the 25th largest of the 144 cities of 15,000 or more listed in South Korea, and the 1,450th largest worldwide. It lies 112 km from Seoul.
Key Facts
Country
Region
Sejong-si
Elevation
49 m
Approximate — modelled, not surveyed
Time zone
Asia/Seoul
Coordinates
36.592, 127.292
Record updated
2026-04-14
Entry edited, not measured
City population, GeoNames. GeoNames publishes no year for its population figures, so “record updated” is when the entry was last edited — not the date the population was measured. Elevation is modelled from a digital elevation model rather than surveyed, so it is approximate.
Nearby Cities
All 144 in South KoreaClosest listed cities by great-circle distance from the city centre.