South Coast Plaza is an upscale-luxury goods shopping mall in Costa Mesa, California. The largest mall on the West Coast of the United States, its sales of over $1.5 billion annually are the highest in the United States. Its 250 retailers represent the highest concentration of design fashion retail in the U.S, with the second highest sales-volume in California at 800 $/sqft —second only to Westfield Valley Fair in San Jose-Santa Clara, at 809 $/sqft . The national average is 411 $/sqft