List of Costco Stores in San Marcos, CA Outlet Note Regular Brands Costco California San Marcos Rating 4.7 based on 76 votes Official Website http://www.costco.com/ Products Handbags Clothing Furniture Jewelry Appliances Electronics Office Products NameAddressPhone Name/Address/Phone Costco outlet - San Marcos 725 Center Dr (760) 871-6867 People Also Viewed