South Korea is about 1.2 times smaller than Pennsylvania.

Pennsylvania is approximately 116,075 sq km, while South Korea is approximately 99,720 sq km, making South Korea 85.91% the size of Pennsylvania. Meanwhile, the population of Pennsylvania is ~12.7 million people (39.1 million more people live in South Korea).
This to-scale comparison of Pennsylvania vs. South Korea uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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