About Sejong
Sejong is a city located in South Korea. According to the latest available data (2026), the population of Sejong is approximately 391,984 residents, making it the #48 most populous city in South Korea.
Globally, Sejong ranks #4,719 among the world's most populated cities.
Sejong City Statistics
| City | Sejong |
| Country |  South Korea |
| Population | 391,984 |
| Global Rank | #4,719 |
| Rank in South Korea | #48 of 136 cities |
| City Category | city |
| Latitude | 36.487 |
| Longitude | 127.2822 |
| Data Year | 2026 |
Where is Sejong Located?
Sejong is located in South Korea, at coordinates 36.487° latitude and 127.2822° longitude. Sejong sits in the subtropics, typically enjoying warm temperatures year-round.
Nearby Cities
Other Cities in South Korea
Largest Cities in South Korea
| # | City | Population |
|---|---|---|
| 1 | Busan | 3,453,198 |
| 3 | Suwon | 1,234,300 |
| 4 | Ulsan | 1,127,553 |
| 5 | Yongin | 1,084,817 |
| 6 | Goyang | 1,061,929 |
Frequently Asked Questions
What is the population of Sejong?
The population of Sejong is approximately 391,984 residents according to the latest available data (2026).
Where is Sejong located?
Sejong is located in South Korea at approximately 36.487° latitude and 127.2822° longitude.
Is Sejong one of the largest cities in South Korea?
With a population of 391,984, Sejong is one of the notable urban areas in South Korea. It ranks #48 out of 136 cities in the country.
