Data Files
06/15/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)
Data Files
06/15/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
06/15/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
06/15/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
06/15/2026
Area District Finance File (AREADIST.TXT)
Data Files
06/15/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
06/15/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Contact Lists
06/15/2026
Business Acceptance Solutions & Major Mailer Support Directory

This document provides a contact list for Business Acceptance Solutions (formerly Business Mailer Support) & Major Mailer Support

 

Announcements
06/12/2026
Power-up your Public Speaking Skills with Chris Lien
Release Notes
06/12/2026
PTR2 Release Notes_DD_06_13_26
Announcements
06/12/2026
DELIVERY - Commercial System Releases (June 20 – June 26)
Announcements
06/12/2026
DELIVERY - NC District Waco Post Office (28169) Temporarily Closed
Announcements
06/12/2026
DELIVERY - South Colton Post Office (13687) - Suspended Temporarily
Announcements
06/12/2026
INFORMATIONAL - USPS Occupancy Trends Product
Announcements
06/12/2026
INFORMATIONAL - USPS Population Mobility Trends Product
Release Notes
06/12/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes

These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.

Announcements
06/11/2026
INFORMATIONAL - Upcoming USPS.com Maintenance on July 11, 2026
Announcements
06/10/2026
INFORMATIONAL - July Price Change 2026 - Commercial System Releases June 28, 2026
Announcements
06/10/2026
INFORMATIONAL - Mailer ID (MID) Validation for Payments API June 22, 2026
Announcements
06/10/2026
DELIVERY - International Service Resumption Notice effective June 12, 2026
Announcements
06/09/2026
DELIVERY - Lone Rock Post Office (50559) - Suspended Temporarily
Presentations
06/09/2026
Atlantic AIM Presentation - June 3, 2026
Contact Lists
06/09/2026
Atlantic AIM Leadership 2026
Announcements
06/08/2026
INFORMATIONAL - New Mail.dat client for July 2026 Price Change June 28, 2026
Announcements
06/08/2026
INFORMATIONAL - USPS APIs System Release Notification June 10, 2026