Sorry, due to unforeseen circumstances chat is currently unavailable. Please check back at a later time.
For your security, we are unable to process any membership fee credit card transactions via chat.
You may have entered a credit card number instead of your membership number. Where can I find my membership number?
Characters Counter is unavailable, contact website administrator You may have entered a credit card number instead of your membership number. Where can I find my membership number?


Chat support is available

Costco Online Hours:
Mon to Fri: 5 AM - 8 PM (PT)
Sat to Sun: 6 AM - 6 PM (PT)
Membership Hours:
Mon to Fri: 6 AM - 6 PM (PT)
Sat: 8 AM - 5 PM (PT)
Business Center Hours:
Mon to Fri: 8 AM - 5 PM (PT)
It is currently Sunday, Sep 13, 2020 01:21 PM (PT)