South Korea is about 99 times smaller than United States.

United States is approximately 9,833,517 sq km, while South Korea is approximately 99,720 sq km, making South Korea 1.01% the size of United States. Meanwhile, the population of United States is ~337.3 million people (285.5 million fewer people live in South Korea).
This to-scale comparison of United States vs. South Korea uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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