City size comparison

compared to

San Mateo is about 3.8 times smaller than Dublin.

Dublin is approximately 118 sq km, while San Mateo is approximately 31 sq km, making San Mateo 26.68% the size of Dublin.
Tip: This to-scale comparison of Dublin vs. San Mateo uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Mateo vs. Dublin

Flip Comparison · See true size
See San Mateo on top of Dublin
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Cost of Living Comparison · 7 categories - 2026 data
Dublin is 4.8% more expensive than San Mateo
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