Announcements
09/28/2026
INFORMATIONAL - Removal of the Dangerous Goods Check Box on Customs Forms
Announcements
09/28/2026
INFORMATIONAL - Executive Retirement - Margaret Pepe
Announcements
09/28/2026
INFORMATIONAL - October 12, 2026, Columbus Day Holiday Recommendations on Live Animal Shipping
Publications
09/28/2026
Labeling List Changes Effective November 1, 2026

Effective November 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L007, L012, L201, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the November 1, 2026, effective date through December 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22713.

Data Files
09/28/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
09/28/2026
USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application. Please note that items in bold text were updated or added recently.

Data Files
09/28/2026
City/State ZIP Code Weekly Compare
Data Files
09/28/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
09/28/2026
AIS Congressional District File (CONG_DIST.TXT)
Data Files
09/28/2026
AIS County Name Table Layout (AISCNTY.TXT)
Data Files
09/28/2026
AMS County Name Table (COUNTY_NAME_TABLE.TXT)
Contact Lists
09/28/2026
AMS Address Report: AISU Mailing List (ADDRREPT.TXT)
Data Files
09/28/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)
Data Files
09/28/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
09/28/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
09/28/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
09/28/2026
Area District Finance File (AREADIST.TXT)
Data Files
09/28/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
09/28/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Announcements
09/25/2026
DELIVERY - Diplomatic Post Office (09880) resumes mailing services
Announcements
09/25/2026
INFORMATIONAL - RESOLVED - PostalOne! System – Post-Deployment Issues
Announcements
09/25/2026
INFORMATIONAL - Adjustments to Priority Mail and USPS Ground Advantage Service Expectations for Noncontiguous States and Territories
Announcements
09/25/2026
INFORMATIONAL - Commercial System Releases – October 4, 2026
Announcements
09/25/2026
INFORMATIONAL - Hawaii - Hurricane Nolo - Operations Weather Advisory
Announcements
09/25/2026
INFORMATIONAL - PostalOne! Alert - October 4, 2026