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How do you submit a change of address for your Costco membership?
What information do I need to provide in order to submit the change of address online?
In order to submit a change of address online, you'll need to log in to your Costco account using your email and password, and then navigate to "My Account" and select "Address Book." From there, simply edit your address information and click "Submit." You may also need to provide your old address and your new address so that Costco can update their records accordingly.