Release Notes
10/22/2025
October 30 2025 Release Notes
Release Notes
10/22/2025
USPS APIs Release Notes

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

Announcements
10/20/2025
DELIVERY - WestPac Area - AZ-NM District San Carlos Post Office (85550) - Resumed
Technical Specifications
10/20/2025
Mail.xml Technical Specifications R63.0.0.0
Technical Specifications
10/20/2025
Mail.dat Technical Specifications R63.0.0.0
FAQs
10/20/2025
USPS PTR2 API Known Issues
Release Notes
10/20/2025
January 2026 Release Overview
Data Files
10/20/2025
ACS Tables: PARS 2024

This spreadsheet contains 12 tables outlining ACS volume and cost for UAA Mail from FY2024.

Data Files
10/20/2025
Base Tables: PARS 2024

This spreadsheet contains 44 base tables focusing on postal operations, cost, and volume of handling UAA mail from FY2024.

Data Files
10/20/2025
Class Tables: PARS 2024

This spreadsheet contains 64 class tables that provide cost and volume by class of mail, presort category, and shape from FY2024.