Data Files
Pending Route Adjustment File

This Excel sheet details route adjustments for October 2022 thru January 2023.

User Guides
2D IMpb Barcode Guide

Some labels on packages may have barcodes that are not able to be scanned while being processed through automated equipment; this could be due to distortion, label placement, movement of items within soft packaging, etc. To overcome these challenges and improve the readability of barcodes, the US Postal Service® recommends using 2D IMpb GS1 Data Matrix barcodes in addition to the traditional IMpb barcode.

The GS1-Data Matrix barcodes contain the same information as the IMpb barcode and are strategically placed on the label to augment the Intelligent Mail® Package Barcode (IMpb™) that has been a mainstay in visibility. Placing the 2D IMpb on opposing sides reduces label print errors and increases the ability for that label to be scanned, resulting in increased in-transit visibility for that package. The 2D IMpb is also recommended for use on Hazmat packages.