List of Costco Stores in Merrillville, IN Outlet Note Regular Brands Costco Indiana Merrillville 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 - Merrillville 1310 E 79th Ave (219) 641-6400 People Also Viewed