United States is about 50 times bigger than South Dakota.

South Dakota is approximately 196,540 sq km, while United States is approximately 9,833,517 sq km, making United States 4,903% larger than South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (336.5 million more people live in United States).
This to-scale comparison of South Dakota vs. United States uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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