Santa Barbara is about 24 times smaller than Los Angeles.

Los Angeles (including the city proper only) is approximately 1,215 sq km, while Santa Barbara is approximately 50 sq km, making Santa Barbara 4.16% the size of Los Angeles.
Tip: This to-scale comparison of Los Angeles vs. Santa Barbara 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.