City size comparison

compared to

Boston is about 3.7 times smaller than Oslo.

Oslo is approximately 454 sq km, while Boston is approximately 124 sq km, making Boston 27.31% the size of Oslo.
Tip: This to-scale comparison of Oslo vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boston vs. Oslo

Flip Comparison · See true size
See Boston on top of Oslo
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Cost of Living Comparison · 7 categories - 2026 data
Oslo is 1.1% more expensive than Boston
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