City size comparison

compared to

Seoul is about 1.7 times bigger than Philadelphia.

Philadelphia is approximately 348 sq km, while Seoul is approximately 605 sq km, making Seoul 74% larger than Philadelphia.
Tip: This to-scale comparison of Philadelphia vs. Seoul uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Seoul vs. Philadelphia

Flip Comparison · See true size
See Seoul on top of Philadelphia
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Cost of Living Comparison · 7 categories - 2026 data
Philadelphia is 49.2% more expensive than Seoul
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