San Marino is about 6,621 times smaller than California.

California is approximately 403,882 sq km, while San Marino is approximately 61 sq km, making San Marino 0.02% the size of California. Meanwhile, the population of California is ~37.3 million people (37.2 million fewer people live in San Marino).
This to-scale comparison of California vs. San Marino uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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