Guam is about 183 times smaller than South Korea.

South Korea is approximately 99,720 sq km, while Guam is approximately 544 sq km, making Guam 0.55% the size of South Korea. Meanwhile, the population of South Korea is ~51.8 million people (51.7 million fewer people live in Guam).
This to-scale comparison of South Korea vs. Guam uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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