Data Files
09/15/2025
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
09/15/2025
Area District Finance File (AREADIST.TXT)
Data Files
09/15/2025
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
09/15/2025
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Data Files
09/11/2025
Informed Visibility Mail Tracking & Reporting Machine Count

List of US Postal Service machines by site to include the description of each machine.

Data Files
09/11/2025
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Data Files
09/11/2025
Early Warning System (EWS002C0.ZIP)

This file is the EWS production file and is updated weekly. This file contains the Early Warning System data file for the CASS™ and MASS™ certification process.

 

Data Files
09/08/2025
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®.

Data Files
09/08/2025
Pending Route Adjustment File

This Excel sheet details route adjustments for August 2025 thru October 2025.

Data Files
09/05/2025
Mail Quality Data through IV®-MTR Data Dictionary