Puerto Rico is about 1.5 times bigger than Everglades National Park.

Everglades National Park is approximately 6,105 km² (2,357 sq mi), while Puerto Rico is approximately 9,104 sq km, making Puerto Rico 49% larger than Everglades National Park.
Tip: This to-scale comparison of Everglades National Park vs. Puerto Rico uses the Mercator projection, which distorts the size of regions near the poles.
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