City size comparison

compared to

Boston is about 1.4 times bigger than Copenhagen.

Copenhagen is approximately 90 sq km, while Boston is approximately 124 sq km, making Boston 38% larger than Copenhagen.
Tip: This to-scale comparison of Copenhagen vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boston vs. Copenhagen
Flip Comparison · See true size
See Boston on top of Copenhagen
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Cost of Living Comparison · 7 categories - 2026 data
Copenhagen is 9.2% more expensive than Boston
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