City size comparison

compared to

Houston is about 2 times bigger than San Diego.

San Diego is approximately 844 sq km, while Houston is approximately 1,659 sq km, making Houston 97% larger than San Diego.
Tip: This to-scale comparison of San Diego vs. Houston uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Houston vs. San Diego

Flip Comparison · See true size
See Houston on top of San Diego
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Cost of Living Comparison · 7 categories - 2026 data
San Diego is 30.0% more expensive than Houston
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