Data Files
08/31/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)
Data Files
08/31/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
08/31/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
08/31/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
08/31/2026
Area District Finance File (AREADIST.TXT)
Data Files
08/31/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
08/31/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Announcements
08/29/2026
INFORMATIONAL - Drop Shipment Appointments at San Antonio Annex 780MP
Release Notes
08/28/2026
October 2026 - Timelimited Price Change Release
Release Notes
08/28/2026
USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.