Applications/ Forms
07/13/2026
99% Mailer Move Update Process Order Form

This form is required to be completed for the 99% accurate certification testing process.

Data Files
07/13/2026
USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application. Please note that items in bold text were updated or added recently.

Data Files
07/13/2026
City/State ZIP Code Weekly Compare
Data Files
07/13/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
07/13/2026
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
07/13/2026
AIS Congressional District File (CONG_DIST.TXT)
Data Files
07/13/2026
AIS County Name Table Layout (AISCNTY.TXT)
Data Files
07/13/2026
AMS County Name Table (COUNTY_NAME_TABLE.TXT)
Contact Lists
07/13/2026
AMS Address Report: AISU Mailing List (ADDRREPT.TXT)
Data Files
07/13/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)