City size comparison

compared to

San Diego is about 138 times smaller than Pennsylvania.

Pennsylvania is approximately 116,075 sq km, while San Diego is approximately 844 sq km, making San Diego 0.73% the size of Pennsylvania.
Tip: This to-scale comparison of Pennsylvania 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. Pennsylvania
Flip Comparison · See true size
See San Diego on top of Pennsylvania
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Cost of Living Comparison · 7 categories - 2026 data
Pennsylvania is 18.8% cheaper than San Diego
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