Announcements
02/23/2026
INFORMATIONAL: USPS Modernization through Package Equipment Upgrades in February and March 2026
Announcements
02/23/2026
PROCESSING AND DISTRIBUTION: USPS Closures Due to Weather Impacts Across the Northeastern United States
FAQs
02/23/2026
Periodicals Application Process FAQ
FAQs
02/23/2026
Periodicals Application Process FAQ
Announcements
02/23/2026
INFORMATIONAL - Mail Growth Incentive - Upcoming Important Dates
Release Notes
02/23/2026
July 2026 Release Overview

Note: For the latest technical specifications, please see the July 2026 Price Change Release Notes as they are published. Mail.dat and Mail.XML updates required for this release. 

Data Files
02/23/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
02/23/2026
City/State ZIP Code Weekly Compare
Data Files
02/23/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
02/23/2026
AIS Congressional District File (CONG_DIST.TXT)