Data Files
01/05/2026
Area District Finance File (AREADIST.TXT)
Data Files
01/05/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
01/05/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Data Files
01/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q1 FY26)

ACS Nixie stats by industry for FY26 Q1.

Data Files
01/02/2026
December 2025 Nixie Volume

This spreadsheet contains the UAA statistics for December 2025.

Data Files
01/02/2026
ZIP Codes by Area and District codes

The Excel spreadsheet lists ZIP Codes with the associated Area and District Codes.  

Data Files
12/29/2025
Labeling List Changes Effective February 1, 2026

Effective February 1, 2026, the Postal Service™ will revise Labeling List(s) L002, L005, L012, L016, L051, L201, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the February 1, 2026, effective date through March 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22694.

Data Files
12/22/2025
12_22_25_PTR2 Release Notes
Data Files
12/08/2025
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
12/04/2025
PTR2 Event Scripting Changes (Excel Document)