South Korea is about 1.2 times bigger than Maine.

Maine is approximately 79,931 sq km, while South Korea is approximately 99,720 sq km, making South Korea 25% larger than Maine. Meanwhile, the population of Maine is ~1.3 million people (50.5 million more people live in South Korea).
Tip: This to-scale comparison of Maine vs. South Korea uses the Mercator projection, which distorts the size of regions near the poles.
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