Tech Guides
01/06/2026
01/06/2026
USPS Ship Tech Sheet
USPS Ship is a modernized platform enabling commercial package payment, verification, and end-to-end visibility for a wide array of domestic and international products.
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01/05/2026
Announcements
01/05/2026
01/05/2026
Announcements
01/04/2026
01/04/2026
Release Notes
01/04/2026
01/04/2026
Announcements
01/02/2026
01/02/2026
Data Files
01/02/2026
01/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q1 FY26)
ACS Nixie stats by industry for FY26 Q1.
Data Files
01/02/2026
01/02/2026
December 2025 Nixie Volume
This spreadsheet contains the UAA statistics for December 2025.
Tech Guides
01/02/2026
01/02/2026
Labeling Lists Technical Guide
The Labeling Lists data product assists mailers with presorting mail. It provides active, originating 3- and 5-digit ZIP Code™ data along with their destination locations [including city/state/ZIP Code] for labeling purposes. The product contains complete data files of each list found online via Postal Explorer® at https://pe.usps.com. Updates to the Labeling Lists are also published in the Postal Bulletin.
Announcements
01/01/2026
01/01/2026