City size comparison

compared to

Boston is around the same size as San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Boston is approximately 124 sq km, making Boston 2% larger than San Francisco.
Tip: This to-scale comparison of San Francisco vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boston vs. San Francisco

Flip Comparison · See true size
See Boston on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 14.3% more expensive than Boston
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