Costco Stores's Corporate Office Headquarters HQ in the USA:
999 Lake Drive
Issaquah, WA 98027 USA
Corporate Phone Number: 1-425-313-8100
Corporate Fax Number: 1-425-313-8103
Corporate Email: email@example.com
Corporate Stock Symbol: COST
Costco is a famous for their big-box wearhouse retail stores. Costco offers general merchandise for the home, clothing for men, women and children, along with grocery items. Costco is one of the premier retailers in the US.
Costco's Customer Service Number is 1-800-220-6000. The company does encourage users to use their technical support system and help forums on their website.