Data Files
12/15/2025
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
12/15/2025
Area District Finance File (AREADIST.TXT)
Data Files
12/15/2025
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
12/15/2025
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Contact Lists
12/15/2025
Business Acceptance Solutions & Major Mailer Support Directory

This document provides a contact list for Business Acceptance Solutions (formerly Business Mailer Support) & Major Mailer Support

 

Announcements
12/13/2025
DELIVERY - WestPac Area - Washington District - Sumas Post Office (98295) - Office Temporarily Closed
Release Notes
12/12/2025
ID API Release Notes Release V1.0
Technical Specifications
12/12/2025
Informed Delivery API Technical Specifications V1.0_5.0
Announcements
12/11/2025
DELIVERY - WestPac - Washington District Snoqualmie Post Office - Temporarily Closed
Announcements
12/11/2025
INFORMATIONAL - Logistics and Infrastructure Organizations