Address (<address>)

When To Use

• To indicate contact information for a page or article. ¹

Rules

• Avoid utilizing the <address> element for addresses that do not serve as contact information for the page or article. For instance, a real estate website should not use the <address> element for each house listing address. ²
• When the <address> element is utilized within an <article> element, it is construed as contact information for that specific article. If it is not nested within an <article> element, it is assumed to be contact information for the entire page. ¹
• The content within an <address> element ought to comprise contact information, but it does not necessarily have to be a postal address. It can take on any form that is fitting, such as a URL, email address, phone number, or social media handle. ²

Sources 

1. MDN: <address>: The Contact Address element by Mozilla contributors is licensed under CC-BY-SA 2.5
2. Suman Damera: HTML address element accessibility by Suman Damera is licensed under Creative Commons Attribution 4.0 International License