To add on to Elizabeth's answer....
there is also the Placer County Assoc of Realtors in our area at:
4750 Grove Street Rocklin, CA 95677
Phone (916) 624-8271 Fax (916) 624-8023
But remember, "Realtor" is just a trade name and might not cover all real estate agents. So just by chance if you're looking for the California Department of Real Estate (DRE).... the DRE governs all the laws, agents, discipline, and licensing of all real estate and mortgage brokers/agents in California.
Sacramento, CA 95818-2500
Good luck on your search!
I hope I was able to help.
Have a great day,