City size comparison

compared to

Dublin is about 3.8 times bigger than San Mateo.

San Mateo is approximately 31 sq km, while Dublin is approximately 118 sq km, making Dublin 275% larger than San Mateo.
Tip: This to-scale comparison of San Mateo vs. Dublin uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Dublin vs. San Mateo

Flip Comparison · See true size
See Dublin on top of San Mateo
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Cost of Living Comparison · 7 categories - 2026 data
San Mateo is 36.9% more expensive than Dublin
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