Data Files
05/28/2026
Population Mobility Trends Summary (CSV) Sample File
Data Files
05/28/2026
Population Mobility Trends 48-Month Historical (CSV) Sample File
Data Files
05/01/2026
April 2026 Nixie Volume

This spreadsheet contains the UAA statistics for April 2026.

Data Files
04/30/2026
USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application. Please note that items in bold text were updated or added recently.

Data Files
04/27/2026
PTR2 Domestic Scan Events and Descriptions
Data Files
04/24/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Operation Codes List

This spreadsheet provides a list of operation codes (opcodes), also known as Scan Event Codes, for the IV-MTR application.

Data Files
04/16/2026
Informed Visibility Mail Tracking & Reporting Machine Count

List of US Postal Service machines by site, including a description of each machine.

Data Files
04/06/2026
PTR Domestic Scan Events and Descriptions
Data Files
04/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q2 FY26)

ACS Nixie stats by industry for FY26 Q2.

Data Files
04/01/2026
March 2026 Nixie Volume

This spreadsheet contains the UAA statistics for March 2026.