Applications/ Forms
01/27/2023
Z4Change Order Form

This order form is used to subscribe to the Z4Change product. 

Data Files
01/26/2023
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Fact Sheets
01/22/2023
Address Information System (AIS) Products Pricing

Pricing guide for Address Information System (AIS) products, including Carrier Route, ZIP + 4®, Five-Digit ZIP®, City State, Delivery Statistics, Z4Change, ZIPMove, eLOT®, and RDI™.

Applications/ Forms
01/22/2023
Address Information System (AIS) Viewer Order Form (PS Form 5111)

Product order form for Adress Information System (AIS) Viewer. Products available for purchase are the City/State Delivery Type Retrieval, County Name Retrieval, Delivery Statistics Retrieval, and ZIP + 4 Retrieval.

Applications/ Forms
01/22/2023
Applications/ Forms
01/22/2023
Fact Sheets
01/22/2023
Address Information System (AIS) Products Pricing

Pricing guide for Address Information System (AIS) products, including Carrier Route, ZIP + 4®, Five-Digit ZIP®, City State, Delivery Statistics, Z4Change, ZIPMove, eLOT®, and RDI™.

Applications/ Forms
12/01/2022
Electronic Product Fulfillment (EPF) Web Access Request Form

This form is used to create a Web-based account with the Addressing and Geospatial Technology (AGT) office which will be utilized to retrieve/download files from the Electronic Product Fulfillment (EPF) website.

Tech Guides
05/16/2022
Address Information System (AIS) Products Technical Guide

The Address Information System (AIS) Products Technical Guide contains documentation on all AIS products, including RDI™, Z4Change, ZIPMove, ZIP + 4®, Five-Digit ZIP®, eLOT®, Carrier Route, City State, and Delivery Statistics.

Tech Guides
05/16/2022
Address Information System (AIS) Products Technical Guide

The Address Information System (AIS) Products Technical Guide contains documentation on all AIS products, including RDI™, Z4Change, ZIPMove, ZIP + 4®, Five-Digit ZIP®, eLOT®, Carrier Route, City State, and Delivery Statistics.

User Guides
01/28/2020
Address Information System (AIS) Viewer User Guide

User guide for Address Information System (AIS) Viewer, an application that provides the ability to retrieve, view, and print reports on demand at a 5-digit ZIP code level.

Announcements
01/28/2019
Publications
03/07/2016
Domestic Mail Manual (DMM®) 509.1.30: Z4CHANGE

This document provides information on the Z4CHANGE service.

Publications
03/07/2016
Domestic Mail Manual (DMM®) 509: Address Information System Products

Address Management provides services that enable customers to manage thequality of their mailing lists while maximizing the Postal Service's ability to efficiently deliver mail.

Data Files
06/26/2008
Sample Z4Change File TXT

This document provides a sample of a Z4 Change .txt file.

Data Files
06/26/2008
Sample Z4Change File TXT

This document provides a sample of a Z4 Change .txt file.