About Seongnam
Seongnam is a mid-sized city located in South Korea, in the Gyeonggi region. According to the latest available data (2026), the population of Seongnam is approximately 918,771 residents, making it the #12 most populous city in South Korea.
Globally, Seongnam ranks #1,974 among the world's most populated cities.
Seongnam City Statistics
| City | Seongnam |
| Country |  South Korea |
| Population | 918,771 |
| Global Rank | #1,974 |
| Rank in South Korea | #12 of 136 cities |
| City Category | mid-sized city |
| Region | Gyeonggi |
| Latitude | 37.4386 |
| Longitude | 127.1378 |
| Data Year | 2026 |
Population Comparison
To put Seongnam's population of 918,771 into perspective:
- Seongnam has over 918,000 residents.
Where is Seongnam Located?
Seongnam is located in South Korea, in the Gyeonggi region, at coordinates 37.4386° latitude and 127.1378° longitude. Seongnam 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 Seongnam?
The population of Seongnam is approximately 918,771 residents according to the latest available data (2026).
Where is Seongnam located?
Seongnam is located in South Korea at approximately 37.4386° latitude and 127.1378° longitude.
Is Seongnam one of the largest cities in South Korea?
With a population of 918,771, Seongnam is one of the notable urban areas in South Korea. It ranks #12 out of 136 cities in the country.
