City size comparison

compared to

Atlanta is about 11 times bigger than San Mateo.

San Mateo is approximately 31 sq km, while Atlanta (map shows its 114 named neighbourhoods; the area covers the whole city) is approximately 350 sq km, making Atlanta 1,015% larger than San Mateo.
Tip: This to-scale comparison of San Mateo vs. Atlanta uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Atlanta vs. San Mateo

Flip Comparison · See true size
See Atlanta on top of San Mateo
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Cost of Living Comparison · 7 categories - 2026 data
San Mateo is 27.6% more expensive than Atlanta
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