Announcements
07/11/2025
INFORMATIONAL - Commercial System Releases - July 13, 2025
Announcements
07/11/2025
Post Office/ZIP Code Entries for Postal Bulletin 7/24/2025

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 7/24/2025.

Publications
07/11/2025
Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systems
Data Files
07/11/2025
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)

This document provides the updated service type codes for  Intelligent Mail® Package Barcodes.

Tech Guides
07/10/2025
Dimensioned Layout for the 4X6 Self Adhesive Container Barcode GS1Data Matrix Format

Supports GS1 Data Matrix barcode symbology

Announcements
07/10/2025
DELIVERY - Atlantic Area – New York 1 District - College Station Post Office 10030 – Temporarily Closed
Release Notes
07/10/2025
USPS APIs Release Notes

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

Announcements
07/09/2025
DELIVERY - Southern Area – Arkansas-Oklahoma District Gamaliel Post Office (72537) – Resumed Operations
Announcements
07/09/2025
DELIVERY: International Service Resumption Notice - Effective July 11, 2025
Announcements
07/08/2025
INFORMATIONAL: USPS APIs System Maintenance