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

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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
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
10/13/2026
City/State ZIP Code Weekly Compare
Data Files
10/13/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
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®.

Data Files
10/13/2026
AIS Congressional District File (CONG_DIST.TXT)
Data Files
10/13/2026
AIS County Name Table Layout (AISCNTY.TXT)
Data Files
10/13/2026
AMS County Name Table (COUNTY_NAME_TABLE.TXT)
Contact Lists
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