City size comparison

compared to

Dallas is about 28 times bigger than San Mateo.

San Mateo is approximately 31 sq km, while Dallas is approximately 880 sq km, making Dallas 2,699% larger than San Mateo.
Tip: This to-scale comparison of San Mateo vs. Dallas uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Dallas vs. San Mateo

Flip Comparison · See true size
See Dallas on top of San Mateo
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Cost of Living Comparison · 7 categories - 2026 data
San Mateo is 31.5% more expensive than Dallas
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