Puerto Rico is around the same size as Big Island of Hawaii.

Big Island of Hawaii is approximately 10,434 km² (4,029 sq mi), while Puerto Rico is approximately 9,104 sq km, making Puerto Rico 87.25% the size of Big Island of Hawaii.
Tip: This to-scale comparison of Big Island of Hawaii vs. Puerto Rico uses the Mercator projection, which distorts the size of regions near the poles.
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