Ansan-si Population 2026
Ansan-si has a population of 623,256, making it the #17 biggest city in 🇰🇷 South Korea, located in Gyeonggi-do. Roughly 1.2% of South Korea's population lives here. It is about 17× smaller than Seoul, the country's biggest city.
Population (city proper)
623,256
Rank in South Korea
#17
Coordinates
37.32°N, 126.82°E
~15 m elevation · Asia/Seoul
Distance to capital (Seoul)
30 km
19 miles, straight line
Other big cities in Gyeonggi-do
| City | Population | Rank in South Korea |
|---|---|---|
| Suwon | 1,234,582 | #7 |
| Goyang-si | 1,061,752 | #9 |
| Seongnam-si | 914,832 | #11 |
| Bucheon-si | 850,731 | #13 |
| Hwaseong-si | 640,890 | #15 |
| Anyang-si | 595,644 | #18 |
| Uijeongbu-si | 479,141 | #22 |
| Pyeongtaek | 364,694 | #26 |
Cities near Ansan-si
- Anyang-si595,644 people · ~12 km away
- Uiwang63,040 people · ~12 km away
- Gunpo286,485 people · ~12 km away
- Hwaseong-si640,890 people · ~13 km away
- Suwon1,234,582 people · ~17 km away
- Gwangmyeong357,545 people · ~18 km away
FAQ
What is the population of Ansan-si?
Ansan-si has a population of 623,256 (city proper, latest official figure via GeoNames), making it the #17 biggest city in South Korea.
What region is Ansan-si in?
Ansan-si is located in Gyeonggi-do, South Korea.
Is Ansan-si the capital of South Korea?
No, the capital of South Korea is Seoul, about 30 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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