City size comparison

compared to

Madrid is about 1.4 times smaller than San Diego.

San Diego is approximately 844 sq km, while Madrid is approximately 604 sq km, making Madrid 71.6% the size of San Diego.
Tip: This to-scale comparison of San Diego vs. Madrid uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Madrid vs. San Diego
Flip Comparison · See true size
See Madrid on top of San Diego
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Cost of Living Comparison · 7 categories - 2026 data
San Diego is 53.7% more expensive than Madrid
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