City size comparison

compared to

San Diego is about 4.2 times bigger than Oakland.

Oakland is approximately 202 sq km, while San Diego is approximately 844 sq km, making San Diego 318% larger than Oakland.
Tip: This to-scale comparison of Oakland 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. Oakland
Flip Comparison · See true size
See San Diego on top of Oakland
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Cost of Living Comparison · 7 categories - 2026 data
Oakland is 7.6% more expensive than San Diego
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