List of Costco Stores in Sequim, WA Outlet Note Regular Brands Costco Washington Sequim 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 - Sequim 955 W Washington St (360) 406-2023 People Also Viewed