Catalina Island is about 1.3 times bigger than Staten Island.

Staten Island is approximately 150 km² (58 sq mi), while Catalina Island is approximately 194 km² (75 sq mi), making Catalina Island 30% larger than Staten Island.
Tip: This to-scale comparison of Staten Island vs. Catalina Island uses the Mercator projection, which distorts the size of regions near the poles.
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