City size comparison

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

Boston is about 7 times smaller than San Diego.

San Diego is approximately 844 sq km, while Boston is approximately 124 sq km, making Boston 14.69% the size of San Diego. We have positioned the outline of San Diego near the middle of Boston.
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This to-scale comparison of San Diego vs. Boston uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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