Catalina Island is about 2,080 times smaller than California.

California is approximately 403,882 sq km, while Catalina Island is approximately 194 km² (75 sq mi), making Catalina Island 0.05% the size of California.
Tip: This to-scale comparison of California vs. Catalina Island uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.