The ACOG (American College of Obstetricians and Gynecologists) Annual Clinical Meeting is currently being held in San Diego. The following are data for San Diego and Imperial Counties.
A more comprehensive table of California data for San Diego and Imperial Counties below [PDF]
White Paper: Cesarean Deliveries (December 2011, California Maternal Quality Care Collaborative)
For-profit hospitals performing more C-sections (September 11, 2010, California Watch)