Data Files
10/05/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
10/05/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Release Notes
10/04/2026
October 4 2026 - PO! and ProgReg - Release Notes
Announcements
10/02/2026
PROCESSING AND DISTRIBUTION - Chicago, IL Regional (RPDC) - Power Outage
User Guides
10/02/2026
API Access Control Customer Dispute Instructions
Announcements
10/02/2026
INFORMATIONAL - UPDATE: PostalOne! Alert – October 4, 2026
Announcements
10/02/2026
INFORMATIONAL - Commercial System Releases – October 7, 8, and 11, 2026
Data Files
10/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q4 FY26)

ACS Nixie stats by industry for FY26 Q4.

Contact Lists
10/02/2026
Mail Service Provider (MSP) - Full-Service Certified Mailers

A Mail Service Provider (MSP) offers a variety of solutions to prepare and present Full-Service presort mailings. For more information regarding Certified MSPs, please follow this link: https://postalpro.usps.com/full-service-cert/fact-sheet

 

Data Files
10/01/2026
September 2026 Nixie Volume

This spreadsheet contains the UAA statistics for September 2026.