Virgin Islands is about 211 times smaller than California.

California is approximately 403,882 sq km, while Virgin Islands is approximately 1,910 sq km, making Virgin Islands 0.47% the size of California. Meanwhile, the population of California is ~37.3 million people (37.1 million fewer people live in Virgin Islands).
Tip: This to-scale comparison of California vs. Virgin Islands uses the Mercator projection, which distorts the size of regions near the poles.