Martha's Vineyard is about 1.5 times bigger than Staten Island.

Staten Island is approximately 150 km² (58 sq mi), while Martha's Vineyard is approximately 227 km² (87 sq mi), making Martha's Vineyard 51% larger than Staten Island.
Tip: This to-scale comparison of Staten Island vs. Martha's Vineyard uses the Mercator projection, which distorts the size of regions near the poles.
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