City size comparison

compared to

San Diego is about 24 times smaller than Massachusetts.

Massachusetts is approximately 20,306 sq km, while San Diego is approximately 844 sq km, making San Diego 4.16% the size of Massachusetts.
Tip: This to-scale comparison of Massachusetts vs. San Diego uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Diego vs. Massachusetts
Flip Comparison · See true size
See San Diego on top of Massachusetts
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Cost of Living Comparison · 7 categories - 2026 data
Massachusetts is 9.8% cheaper than San Diego
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