Excellent question. I always check out this info for my clients.
This website: ww.city-data.com/city is great for finding out about a community you want to move into. Also call the local police station I have found they often will tell you about the specific areas.
Valerie O'Brien http://www.owntheoc.com
Not a crime expert but you can check the crime websites and with the police department.
What you'll most likely find is that it is low. This is one of the more popular zip codes in Fullerton as much of it feeds schools like Laguna Road Elementary and Sunny Hills High School. Generally speaking it has some of the most expensive neighborhoods in the area.