City size comparison

compared to

Oakland is about 4.2 times smaller than San Diego.

San Diego is approximately 844 sq km, while Oakland is approximately 202 sq km, making Oakland 23.93% the size of San Diego.
Tip: This to-scale comparison of San Diego vs. Oakland uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Oakland vs. San Diego
Flip Comparison · See true size
See Oakland on top of San Diego
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Cost of Living Comparison · 7 categories - 2026 data
San Diego is 1.5% cheaper than Oakland
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