United Kingdom is about 1.2 times bigger than South Dakota.

South Dakota is approximately 196,540 sq km, while United Kingdom is approximately 243,610 sq km, making United Kingdom 24% larger than South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (67.0 million more people live in United Kingdom).
This to-scale comparison of South Dakota vs. United Kingdom uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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