City size comparison

compared to

Oslo is about 3.7 times bigger than Boston.

Boston is approximately 124 sq km, while Oslo is approximately 454 sq km, making Oslo 266% larger than Boston.
Tip: This to-scale comparison of Boston vs. Oslo uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Oslo vs. Boston

Flip Comparison · See true size
See Oslo on top of Boston
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Cost of Living Comparison · 7 categories - 2026 data
Boston is 80.4% more expensive than Oslo
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