Announcements
05/02/2025
Post Office/ZIP Code Entries for Postal Bulletin 5/15/2025

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 5/15/2025.

Publications
05/02/2025
PCC Insider April 2025 Edition
Announcements
05/02/2025
Postal Service Honors 2025 PCC Leadership Award Winners in Nashville, TN
Data Files
05/02/2025
ZIP Codes by Area and District codes

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

Data Files
05/01/2025
April 2025 Nixie Volume

This spreadsheet contains the UAA statistics for April 2025.

Contact Lists
05/01/2025
May - Mailers Technical Advisory Committee (MTAC) Membership Roster and Vacancies
Release Notes
05/01/2025
USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

Contact Lists
05/01/2025
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
Contact Lists
05/01/2025
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.

Contact Lists
05/01/2025
CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)