Change the audience contact info in MailChimp

After signing in, click on your name on the top-right. Then click on “Account”

From the Account page, click on “Settings” and then “Contact Information” from the drop-down.

On the “Manage Contact Information” page, scroll all the way down to “Audiences in this Account”. This holds the company name & address that’s shown to subscribers in your audience. To edit, click on “Edit Audience Information”

In “Required email footer content”, you can fill out/edit the information you show your subscribers: why they signed up for your list, where you’re located and your website URL.
Pro Tip: Make sure to give a clear reminder on why they signed up (“Because you wanted to hear about product offerings and discounts” instead of “you signed up on my website”).