Staten Island is about 1.2 times bigger than Nantucket.

Nantucket is approximately 124 km² (48 sq mi), while Staten Island is approximately 150 km² (58 sq mi), making Staten Island 21% larger than Nantucket.
Tip: This to-scale comparison of Nantucket vs. Staten Island uses the Mercator projection, which distorts the size of regions near the poles.
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