Data Files
02/16/2017
Test File Creation Layout

This is an electronic test file layout for MAC test creation.

Data Files
02/16/2017
Return Test File Layout

This document provides information about the MAC Return Test File - Electronic File Layout Format Version 1.0 (*.txt) Date: 2017.

Data Files
01/11/2017
Intelligent Mail Barcode Tracing (IMb Tracing®) Full Operation Codes List

This spreadsheet provides a list of both active and inactive Full Operation Codes for IMb Tracing.

Data Files
01/10/2017
Priority Mail Express Sunday/Holiday Delivery

The destination ZIP Codes listed support scheduled delivery of Priority Mail Express shipments on Sundays and/or holidays. It must be used in conjunction with the Priority Mail Express Directory.

Data Files
11/28/2016
Address Information System (AIS) Area/District 3-Digit and 5-Digit ZIP Code™ Assignments
This document provides addressing information for  Area/District 3-Digit and 5-Digit ZIP Code™ Assignments