Shanghai vs Seoul
Shanghai is about 10× larger than Seoul by administrative area. Shanghai (China) covers 6,341 km² (2,448 mi²) with a population of 24.9 million, while Seoul (South Korea) covers 605 km² (234 mi²) with 9.7 million residents.
| Metric | Shanghai | Seoul |
|---|---|---|
| Area | 6,341 km² | 605 km² |
| Area (mi²) | 2,448 mi² | 234 mi² |
| Population | 24,870,895 | 9,668,465 |
| Population density | 3,922 /km² | 15,974 /km² |
| Area ratio | Shanghai is ~10× larger by area than Seoul. | |
Frequently asked questions
Is Shanghai bigger than Seoul?
Yes — Shanghai is about 10× larger by area: 6,341 km² vs 605 km².
How big is Shanghai?
Shanghai, China, covers about 6,341 km² (2,448 mi²) of administrative area.
How big is Seoul?
Seoul, South Korea, covers about 605 km² (234 mi²) of administrative area.
Which city has more people, Shanghai or Seoul?
Shanghai has the larger population: 24.9 million vs 9.7 million. Population density is about 3,922 people/km² in Shanghai and 15,974 people/km² in Seoul.
City boundaries from OpenStreetMap. Last updated 2026-08-18.
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