City size comparison

 San Francisco (CA), United States
compared to
 Boston (MA), United States

San Francisco is around the same size as Boston.

Boston is approximately 124 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 97.58% the size of Boston. We have positioned the outline of Boston near the middle of San Francisco.
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This to-scale comparison of Boston vs. San Francisco uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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