Data Files
09/28/2026
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
09/28/2026
City/State ZIP Code Weekly Compare
Data Files
09/28/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
09/28/2026
AIS Congressional District File (CONG_DIST.TXT)
Data Files
09/28/2026
AIS County Name Table Layout (AISCNTY.TXT)