Data Files
09/23/2016
L000 NDC Labeling List

Current labeling lists on the FAST site.
 

Data Files
09/01/2016
L801 AADCs: Letter-Size Mailings

L801 describes the service area by individual 3-digit ZIP Code prefix for automation rate letter-size mailings.

 

Data Files
08/16/2016
Structure Change Request

This document contains a zip file of .dat and .XML structure change request files.

Data Files
06/17/2016
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Mail.XML™ Test Message SSL Certificate

This ZIP file includes the Secure Sockets Layer (SSL) certificate for MailXML™ test pull messages in the IV-MTR application. This certificate is necessary when using Mail.XML pull messages to receive mail tracking data from the IV application.

Data Files
03/17/2016
eInduction Surface Visibility Sites

This document contains a list of surface visibility-enabled eInduction facilities in CSV format.

Data Files
01/16/2015
ACS™ File Format Sample File

Sample file formats for ACS™.

Data Files
01/14/2015
Transportation Instruction Icons

This document contains a ZIP folder of icons for Transportation Instructions.

Data Files
07/12/2012
R11 RDI™ Cycle M Static Data

This zip file contains RDI 11-digit static data for Cycle M.

Data Files
12/03/2010
CASS™ Cycle N Stage I File

This zip file is for categories only processed with 2009-2011 Cycle N static data.

Data Files
07/16/2010
Early Warning System (EWS) Cycle N Static Data

This zip file contains Early Warning System Data for Cycle N.

Data Files
07/13/2010
Delivery Type Cycle N Static Data

This text file provides delivery type Cycle N static data

Data Files
07/08/2010
R9 RDI™ Cycle N Static Data

This zip file contains RDI 9-digit static data.

Data Files
07/08/2010
R11 RDI™ Cycle N Static Data

This zip file contains RDI 11-digit static data.

Data Files
05/03/2010
Enhanced Line of Travel (eLOT) Cycle M Static Data

This zip file contains static data for eLot Cycle M.

Data Files
05/03/2010
DPV® Vacant Table Cycle M Static Data

This data file provides static data for DPV® Vacant Table Cycle M.

Data Files
05/03/2010
R9 RDI™ Cycle M Static Data

This zip file contains RDI 9-digit static data for Cycle M.

Data Files
05/03/2010
EWS Data used with the NATLSTG1M.ZIP file

This zip file contains EWS data associated with the Stage 1 File. 

Data Files
09/02/2009
Carriage Return Line Feed (CRLF).ZIP

This document contains the CRLF data file (ZIP).

Data Files
06/26/2008
Sample Carrier Route File

This document provides a sample of a Carrier Route .txt file.

Data Files
06/26/2008
Sample Delivery Statistics File TXT

This document provides a sample of a Delivery Statistics .txt file.

Data Files
06/26/2008
Sample Z4CHANGE File TXT

This document provides a sample of a Z4CHANGE .txt file.

Data Files
06/26/2008
Sample ZIPMove File TXT

This document provides a sample of a ZIPMove .txt file.

Data Files
06/26/2008
Sample Five Digit ZIP File TXT

This document provides a sample of a Five Digit ZIP .txt file.

Data Files
06/25/2008
Enhanced Line of Travel (eLOT) Sample File

This document provides a sample data file for eLOT.

Data Files
04/23/2008
Computerized Delivery Sequence (CDS) Sample ZIP Code™

This document contains sample ZIP Code™ file for CDS.

Data Files
03/08/2008
USPS-LR-L-62

This library reference documents the development of test-year volume, characteristics, and costs of processing Undeliverable-As-Addressed mail (UAA) mail. This is a Category 2 library reference sponsored by witness Cutting (USPS-T-26).

Data Files
05/01/2006
Z4 Info File Layout

This data file presents a table of codes for primary and secondary numbers to describe Z4Info files.

Data Files
Labeling List File *Moved*

Please note that this file has been moved to https://postalpro.usps.com/operations/labeling-lists/changes-september-2025. We apologize for the inconvenience. 

Data Files
Address Matching System (AMS) Congressional Table

This document lists congressional district codes for the AMS database.

Data Files
Address Information System (AIS) ZIP Code™ Record Description

File layout for AISUADDR.txt and AISUZIPS.txt.

Data Files
PTR Error/ Warning Messages

This document provides information on the Product Tracking System Error and Warning Messages.

Data Files
Service Hubs and Facilities Locations

This document provides a list of service hub facilities, includes area, district, NASS, site, locale key, and start date.

Data Files
Sample ZIP + 4® File TXT

This document provides a sample of a ZIP + 4 .txt file.

Data Files
Sample ZIP + 4® Transaction File TXT

This document provides a sample of a ZIP + 4 Transaction .txt file.

Data Files
City State Sample File XLS

This document contains the sample file for AIS City State product.