Program Requirements
06/02/2025
FAQs
06/02/2025
First-Class Mail and Marketing Mail Growth Incentives FAQs

On September 27, 2023, the Postal Regulatory Commission (PRC) approved the Postal Service request to make Mail Classification Schedule (MCS) changes to establish two distinct Mail growth incentives — a First Class Mail Growth Incentive and a Marketing Mail Growth Incentive. The incentives will run concurrently from Jan. 1, 2025 through Dec. 31, 2025. The following are some frequently asked questions and answers on these incentives.

Data Files
06/02/2025
ZIP Codes by Area and District codes

The Excel spreadsheet lists ZIP Codes with the associated Area and District Codes.  

Announcements
05/30/2025
Post Office/ZIP Code Entries for Postal Bulletin 6/12/2025

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 6/12/2025.

Publications
05/30/2025
Release Notes
05/29/2025