City size comparison

compared to

Seoul is about 4.9 times bigger than Boston.

Boston is approximately 124 sq km, while Seoul is approximately 605 sq km, making Seoul 388% larger than Boston.
Tip: This to-scale comparison of Boston vs. Seoul uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Seoul vs. Boston

Flip Comparison · See true size
See Seoul on top of Boston
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Cost of Living Comparison · 7 categories - 2026 data
Boston is 2.3 times more expensive than Seoul
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