Announcements
07/13/2026
INFORMATIONAL - PostalOne! System (PO!) – Delivery Sort Container Discount not applied
Data Files
07/13/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
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)
Data Files
07/13/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
07/13/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
07/13/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
07/13/2026
Area District Finance File (AREADIST.TXT)
Data Files
07/13/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
07/13/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Contact Lists
07/13/2026
Secure Destruction Plant ZIP Look Up Table

This document provides a ZIP Code lookup table for Secure Destruction plants.

Applications/ Forms
07/12/2026
AIS Copyright/License Agreement
Applications/ Forms
07/12/2026
Delivery Unit Summary Form

The Delivery Unit Summary form must be completed in its entirety in order to request DMM® 507.8 Service.

Fact Sheets
07/12/2026
Address Information System (AIS) Products Pricing

Pricing guide for Address Information System (AIS) products, including Carrier Route, ZIP + 4®, Five-Digit ZIP®, City State, Delivery Statistics, Z4Change, ZIPMove, eLOT®, and RDI™.

Applications/ Forms
07/12/2026
Address Information Systems (AIS) Products Order Form

Order form for Address Information System (AIS) products.

Applications/ Forms
07/12/2026
Address Element Correction (AEC) and AEC II Processing Request Form for Vendors

Vendor processing request form for AEC and AEC II.

Applications/ Forms
07/12/2026
Address Element Correction (AEC) & AEC II Processing Request Form

Processing form for AEC and AEC II products.