Los Angeles, Orange, San Diego, and Ventura form the South Coast wine region. There are just over 100 wineries in the South Coast region. Over half of those wineries are located within San Diego County.
There are six approved American Viticultural Areas in the South Coast wine region.
San Diego County AVA's: Ramona Valley, San Pasqual Valley and South Coast.
Los Angeles county AVA's: Malibu-Newton Canyon, Saddle Rock Malibu and Leona Valley.