List of Costco Stores in Kennewick, WA Outlet Note Regular Brands Costco Washington Kennewick 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 - Kennewick 8505A W Gage Blvd (509) 737-8857 People Also Viewed