Samoa is about 5 times bigger than Guam.

Guam is approximately 544 sq km, while Samoa is approximately 2,831 sq km, making Samoa 420% larger than Guam. Meanwhile, the population of Guam is ~168,999 people (50,307 more people live in Samoa).
Tip: This to-scale comparison of Guam vs. Samoa uses the Mercator projection, which distorts the size of regions near the poles.
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