South Dakota is around the same size as Utah.

Utah is approximately 212,751 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 92.38% the size of Utah. Meanwhile, the population of Utah is ~2.8 million people (1.9 million fewer people live in South Dakota).
Tip: This to-scale comparison of Utah vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles.
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