List of Costco Stores in Simi Valley, CA Outlet Note Regular Brands Costco California Simi Valley 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 - Simi Valley 2660 Park Center Dr (805) 578-3301 People Also Viewed