Data Files
10/13/2026
AMS Address Report: AISU Mailing List (ADDRREPT.TXT)
Data Files
10/13/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)
Data Files
10/13/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
10/13/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
10/13/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
10/13/2026
Area District Finance File (AREADIST.TXT)
Data Files
10/13/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
10/13/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Announcements
10/11/2026
DELIVERY: Southern Area - AL-MS District - Coffee Springs Post Office (36318) - Temporarily Suspended
Announcements
10/11/2026
DELIVERY: Southern Area - AL/MS Resume Operations - 3-Digit Zip Code Areas - 365, 366 & 395
Announcements
10/11/2026
DELIVERY: Southern Area - Florida 1: 3 Digit Zip Code Areas - Temporarily Suspended
Announcements
10/10/2026
PROCESSING & DISTRIBUTION: Update - Hurricane Isaias - Gulf Region of U.S. - Facility Closures
Announcements
10/09/2026
PROCESSING & DISTRIBUTION: Update Central Processing Region - Louisville, KY Processing and Distribution Center (P&DC) Delays
Announcements
10/09/2026
DELIVERY - Southern Area -AL-MS District - 3-Digit Zip Code Areas 365, 366, & 395 Temporarily Suspended
Announcements
10/09/2026
INFORMATIONAL - Commercial System Releases (COP 2.5.9, LBRO 20.0.93)
Announcements
10/09/2026
INFORMATIONAL - Hurricane Isaias – Gulf Region of U.S. – Facility Closures
Announcements
10/09/2026
INFORMATIONAL - PO! Alert - October 18, 2026
Release Notes
10/09/2026
October 18 2026 PO! 64.1.2.0 Release Notes
Release Notes
10/09/2026
October 15 2026 COP 2.5.9 Release Notes
Release Notes
10/09/2026
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
10/08/2026
DELIVERY - Crucible Post Office (15325) - Suspended Temporarily
Announcements
10/08/2026
INFORMATIONAL - Scheduled Maintenance for October 17, 2026 – Possible Disruption with USPS Payments API
Announcements
10/07/2026
New Addressing Products and Services
Announcements
10/07/2026
Save the Date: National PCC Week 2027 Dates Confirmed
Publications
10/07/2026
PCC Events (October 2026)