List of Costco Stores in King of Prussia, PA Outlet Note Regular Brands Costco Pennsylvania King of Prussia 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 - King of Prussia 201 Allendale Rd (610) 337-6601 People Also Viewed