Disneyland is about 729,819 times smaller than California.

California is approximately 403,882 sq km, while Disneyland is approximately 0.55 km² (0.21 sq mi), making Disneyland 0.0% the size of California.
Tip: This to-scale comparison of California vs. Disneyland 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.