Data Files
11/24/2025
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
11/24/2025
AISU Contact Information (AISUADDR.TXT)
Data Files
11/24/2025
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
11/24/2025
Area District Finance File (AREADIST.TXT)
Data Files
11/24/2025
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
11/24/2025
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Data Files
11/21/2025
PTR Domestic Scan Events and Descriptions
Data Files
11/20/2025
PTR 2 Event Scripting Changes
Data Files
11/20/2025
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.

Data Files
11/10/2025
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®.