04/01/2026
04/01/2026
04/01/2026
March 2026 Nixie Volume
This spreadsheet contains the UAA statistics for March 2026.
04/01/2026
04/01/2026
Informed Visibility Mail Tracking & Reporting Machine Count
List of US Postal Service machines by site, including a description of each machine.
04/01/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker
This document provides a list of active IV-MTR work to be as well as items completed in FY25.
*Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.
04/01/2026
ZIP Codes by Area and District codes
The Excel spreadsheet lists ZIP Codes with the associated Area and District Codes.
03/31/2026
03/31/2026
03/31/2026
03/31/2026
03/31/2026
03/30/2026
03/30/2026
USPS APIs Terms and Conditions
ACKNOWLEDGEMENT AND ACCEPTANCE. Read this carefully before registering to use the USPS API services. By utilizing the APIs, you hereby ACCEPT ALL of the terms and conditions of this Agreement.
03/29/2026
03/27/2026
03/27/2026
03/27/2026
Labeling List Changes Effective May 1, 2026
Effective May 1, 2026, the Postal Service™ will revise Labeling List(s) L007, L012, L014, L016, L051, 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 May 1, 2026, effective date through June 30, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22700.
03/26/2026
03/26/2026
03/25/2026
03/25/2026
Beyond the Mail
Turn USPS’s unmatched doorstep reach into smarter decisions with Beyond the Mail—powered by USPS Post Office and Collection Box Data, USPS Occupancy Trends, and USPS Population Mobility Trends for sharper planning across real estate, retail, logistics, and more.
03/25/2026
03/25/2026
03/25/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes
These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.