South Dakota is about 1.6 times smaller than Poland.

Poland is approximately 312,685 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 62.86% the size of Poland. Meanwhile, the population of Poland is ~38.1 million people (37.3 million fewer people live in South Dakota).
This to-scale comparison of Poland vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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