02/27/2026
Undeliverable-as-Addressed (UAA) Mail Roll-Up 1998-2025
This spreadsheet provides a breakdown of Total UAA mail by mail class from FY1998 thru FY2025.
Labeling List Changes Effective April 1, 2026
Effective April 1, 2026, the Postal Service™ will revise Labeling List(s) L002, L005, L007, L012, 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 April 1, 2026, effective date through May 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22698.
02/24/2026
Pending Route Adjustment File
This Excel sheet details route adjustments for February 2026 thru April 2026.
01/27/2026
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)
This document provides the updated service type codes for Intelligent Mail® Package Barcodes.
ACS Tables: PARS 2025
This spreadsheet contains 12 tables outlining ACS volume and cost for UAA Mail from FY2025.
Base Tables: PARS 2025
This spreadsheet contains 44 base tables focusing on postal operations, cost, and volume of handling UAA mail from FY2025.
01/06/2026
Class Tables: PARS 2025
This spreadsheet contains 64 class tables that provide cost and volume by class of mail, presort category, and shape from FY2025.
01/06/2026
Volume Tables: PARS 2025
This spreadsheet contains 3 volume tables that provide summary data by class of mail, shape, presort category, and disposition of UAA Mail.
01/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q1 FY26)
ACS Nixie stats by industry for FY26 Q1.