Skip to main content
  • Global

USPS® valid address


A USPS® valid address is an address that abides by United States Postal Service standards and formatting.

When addressing mail within the United States, it is important to adhere to the USPS® valid address format. While many believe that they know the appropriate way to address an envelope or package, a USPS® valid address has features that are not commonly followed by the majority of mail senders.

A USPS® valid address contains the following:

  • All capital letters
  • A valid and deliverable address
  • Included company name, apartment number, or suite number if applicable
  • Valid USPS® acronyms and abbreviations
  • A valid ZIP+4®
  • No commas or periods

The example below shows a USPS® valid address:

123 N MAIN ST STE 45 
BOSTON MA 02110-1615

Ensuring that an address is a USPS® valid address is an important step in reducing amounts of returned mail and improving mail delivery time.

Try our USPS® address lookup tool for free!



Related links:

Read more about USPS® address list software. 

See what our USPS address verification software can do for your business.