Country size comparison

compared to

San Marino is about 14 times smaller than San Diego.

San Diego is approximately 844 sq km, while San Marino is approximately 61 sq km, making San Marino 7.23% the size of San Diego.
Tip: This to-scale comparison of San Diego vs. San Marino uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Marino vs. San Diego
Flip Comparison · See true size
See San Marino on top of San Diego
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Cost of Living Comparison · 6 categories - 2026 data
San Diego is 96.1% more expensive than San Marino overall
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