South Korea is about 20 times smaller than Mexico.

Mexico is approximately 1,964,375 sq km, while South Korea is approximately 99,720 sq km, making South Korea 5.08% the size of Mexico. Meanwhile, the population of Mexico is ~129.2 million people (77.3 million fewer people live in South Korea).
This to-scale comparison of Mexico vs. South Korea uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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