State size comparison

compared to

California is about 479 times bigger than San Diego.

San Diego is approximately 844 sq km, while California is approximately 403,882 sq km, making California 47,752% larger than San Diego.
Tip: This to-scale comparison of San Diego vs. California uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: California vs. San Diego
Flip Comparison · See true size
See California on top of San Diego
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Cost of Living Comparison · 7 categories - 2026 data
San Diego is 9.2% more expensive than California
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