Michigan is about 1.3 times bigger than South Dakota.

South Dakota is approximately 196,540 sq km, while Michigan is approximately 250,493 sq km, making Michigan 27% larger than South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (9.1 million more people live in Michigan).
This to-scale comparison of South Dakota vs. Michigan uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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