Data Files
10/19/2026
PTR Domestic Scan Events and Descriptions
Data Files
10/19/2026
City/State ZIP Code Weekly Compare
Data Files
10/19/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
10/19/2026
AIS Congressional District File (CONG_DIST.TXT)
Data Files
10/19/2026
AIS County Name Table Layout (AISCNTY.TXT)
Data Files
10/19/2026
AMS County Name Table (COUNTY_NAME_TABLE.TXT)
Data Files
10/19/2026
AMS Address Report: AISU Mailing List (ADDRREPT.TXT)
Data Files
10/19/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)
Data Files
10/19/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
10/19/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
10/19/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
10/19/2026
Area District Finance File (AREADIST.TXT)
Data Files
10/19/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
10/19/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Announcements
10/16/2026
DELIVERY - Southern Area -Texas 2 District - Matagorda Post Office (77457) Resuming Operations
Announcements
10/16/2026
Step Into Leadership: Apply Now for the USPS National AIM Industry
Announcements
10/16/2026
INFORMATIONAL - Commercial System Releases – Week of October 24, 2026
Release Notes
10/16/2026
PTR1 Release Notes_DD_10_17_26
Announcements
10/16/2026
INFORMATIONAL - RESOLVED - PostalOne! System – INCIDENT 11118454 Extended Processing Times for Large Mail.XML Mailings
Announcements
10/15/2026
INFORMATIONAL - New Commercial Organization
Announcements
10/15/2026
INFORMATIONAL - Chief Processing & Distribution Office Reorganization
Announcements
10/15/2026
INFORMATIONAL - USPS APIs System Release Notification – October 15, 2026
Announcements
10/15/2026
INFORMATIONAL - USPS APIs System Release Notification October 28, 2026
Announcements
10/15/2026
DELIVERY - Southern Area - FL1 District - 3 Digit Zip Code Area 324 & 325 All Operations Restored
Applications/ Forms
10/15/2026
PCCAC Candidate Application 9.28.2026
Contact Lists
10/15/2026
Mail Service Provider (MSP) - Full-Service Certified Mailers

A Mail Service Provider (MSP) offers a variety of solutions to prepare and present Full-Service presort mailings. For more information regarding Certified MSPs, please follow this link: https://postalpro.usps.com/full-service-cert/fact-sheet

 

User Guides
10/14/2026
eDoc Submitter Credit Enrollment GuIde

Placeholder Page

Presentations
10/14/2026
2027 Promotions Webinar Recording

NOTE: THE WEBINAR BEGINS AT THE 18:40 MARK

 

Recording of the 2027 Promotions Webinar going over details of the various promotions and add-ons.

Presentations
10/14/2026
2027 Promotions Webinar Slides

Slides for the 2027 Promotions Webinar providing details on the various promotions offered.

Release Notes
10/14/2026
EU Customs Change Release Overview
Technical Specifications
10/14/2026
USPS MCAT - TechSheet
Announcements
10/13/2026
PROCESSING & DISTRIBUTION: Update - Hurricane Isaias - Gulf Region of U.S. - Processing Facilities Resume Operations
Announcements
10/13/2026
DELIVERY: Update - Southern Area - Florida 1 - 3 Digit Zip Code Areas - 324 & 325 Operations Restored
Release Notes
10/13/2026
October 11 2026 EPS 8.7.2.0 Release Notes
Error Codes
10/13/2026
Known Issues List 10.08.2026
Data Files
10/13/2026
Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACSLink®.

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
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)