Data Files
10/20/2025
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
10/20/2025
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Data Files
10/16/2025
Z4 Info File

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

Data Files
10/16/2025
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
10/14/2025
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
10/06/2025
USPS Reporting ZIP Codes (Locations Using Scanning ZIP Codes not in AMS)
Data Files
10/06/2025
Informed Visibility Mail Tracking & Reporting Machine Count

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

Data Files
10/06/2025
Pending Route Adjustment File

This Excel sheet details route adjustments for September 2025 thru November 2025.

Data Files
10/02/2025
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q4 FY25)

ACS Nixie stats by industry for FY25 Q4.

Data Files
10/01/2025
September 2025 Nixie Volume

This spreadsheet contains the UAA statistics for September 2025.