City size comparison

compared to

San Diego is around the same size as Austin.

Austin is approximately 829 sq km, while San Diego is approximately 844 sq km, making San Diego 2% larger than Austin.
Tip: This to-scale comparison of Austin 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. Austin
Flip Comparison · See true size
See San Diego on top of Austin
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Cost of Living Comparison · 7 categories - 2026 data
Austin is 19.9% cheaper than San Diego
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