About San Diego: Counties: San Diego
Mayor: Kevin Faulconer
Area Codes: (619) (858)
Doing Business in San Diego? Here’s what you need to know. Business licenses can be obtained at the Office of the City Treasure, located at 1200 Third Avenue, First Floor, San Diego, CA 92112 or by calling 1.619.615.1500. They can also help with questions about business taxes, starting a business, obtaining permits, and contract bids.