Netherlands is about 4.7 times smaller than South Dakota.

South Dakota is approximately 196,540 sq km, while Netherlands is approximately 41,543 sq km, making Netherlands 21.14% the size of South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (16.6 million more people live in Netherlands).
Tip: This to-scale comparison of South Dakota vs. Netherlands uses the Mercator projection, which distorts the size of regions near the poles.
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