California is about 16 times bigger than Macedonia.

Macedonia is approximately 25,713 sq km, while California is approximately 403,882 sq km, making California 1,471% larger than Macedonia. Meanwhile, the population of Macedonia is ~2.1 million people (35.1 million more people live in California).
Tip: This to-scale comparison of Macedonia vs. California uses the Mercator projection, which distorts the size of regions near the poles.