Where can I find the law or ordinances regarding flyer distribution for a city or county?

My company needs to do some promoting and we are going to distribute flyers on our own. Where can I find the law or ordinances regarding the legality of such distribution for a given city or county? Specifically, I'm looking for Tustin, Irvine, Garden Grove, and Anaheim California.

You can call city hall of the particular city you want to distrupute fliers in, or the non emergency police department phone number.