South Korea is about 2.1 times smaller than Utah.

Utah is approximately 212,751 sq km, while South Korea is approximately 99,720 sq km, making South Korea 46.87% the size of Utah. Meanwhile, the population of Utah is ~2.8 million people (49.1 million more people live in South Korea).
Tip: This to-scale comparison of Utah vs. South Korea uses the Mercator projection, which distorts the size of regions near the poles.
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