Data Files
02/09/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)
Data Files
02/09/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
02/09/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
02/09/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
02/09/2026
Area District Finance File (AREADIST.TXT)
Data Files
02/09/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
02/09/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Announcements
02/06/2026
INFORMATIONAL - USPS APIs System Deployment February 7, 2026
Announcements
02/06/2026
INFORMATIONAL - Commercial System Releases - February 25 2026
Announcements
02/06/2026
INFORMATIONAL - MAILER ID (MID) Validation for Payments POSTPONED