Postal Customer Council (PCC) Chapters
Find the address of your local PCC group and contact information for the postmaster, manager, or officer in charge.
Quick Service Guide for Mail Standards
The Quick Service Guide is a reference for basic mailing standards.
Business Mail Acceptance (BMA)
The Business Mail Acceptance (BMA) website is a resource for business mailers.
Guide to the Mailer Scorecard
The Mailer Scorecard is a mail quality tool that displays a monthly results dashboard for letter and flat mailings.
Domestic Mail Manual (DMM)
The Domestic Mail Manual is a detailed reference guide containing policies and prices of the United States Postal Service (USPS®).
Official USPS® ZIP Code Lookup Tool
Find a correct ZIP+4 Code by entering an address at this USPS® website.