Pitcairn Islands is about 58 times smaller than Rhode Island.

Rhode Island is approximately 2,706 sq km, while Pitcairn Islands is approximately 47 sq km, making Pitcairn Islands 1.74% the size of Rhode Island. Meanwhile, the population of Rhode Island is ~1.1 million people (1.1 million fewer people live in Pitcairn Islands).
Tip: This to-scale comparison of Rhode Island vs. Pitcairn Islands uses the Mercator projection, which distorts the size of regions near the poles.
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