Poland is about 1.3 times smaller than California.

California is approximately 403,882 sq km, while Poland is approximately 312,685 sq km, making Poland 77.42% the size of California. Meanwhile, the population of California is ~37.3 million people (839,145 more people live in Poland).
This to-scale comparison of California vs. Poland uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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