Announcements
06/08/2026
INFORMATIONAL - New Mail.dat client for July 2026 Price Change June 28, 2026
Announcements
06/08/2026
INFORMATIONAL - USPS APIs System Release Notification June 10, 2026
Data Files
06/08/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
06/08/2026
City/State ZIP Code Weekly Compare
Data Files
06/08/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
06/08/2026
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
06/08/2026
AIS Congressional District File (CONG_DIST.TXT)
Data Files
06/08/2026
AIS County Name Table Layout (AISCNTY.TXT)
Data Files
06/08/2026
AMS County Name Table (COUNTY_NAME_TABLE.TXT)
Contact Lists
06/08/2026
AMS Address Report: AISU Mailing List (ADDRREPT.TXT)