ZIP + 4® Product
The ZIP + 4® Product is a base reference file that can be accessed by an application to assign the correct ZIP + 4® Code associated with a physical address.
Who is ZIP + 4® Product for?
ZIP + 4® is for mailers looking to add ZIP + 4® codes to their address files. Mailers must purchase or develop their own matching software in order to use this file.
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Correct and Standardize: Address Information System (AIS) Products
What is ZIP + 4® Product?
The ZIP + 4® Product File enables businesses with computer capabilities to add ZIP + 4® codes to their address files. The ZIP + 4® file contains approximately 30 million records is available in its entirety or by selected states. The ZIP + 4® product contains raw data and does not contain any software. ZIP + 4® file is available through Electronic Product Fulfillment (EPF) on a monthly or quarterly basis. The changed ZIP + 4® Code information is available monthly.
To convert mailing lists to ZIP + 4®, mailers can:
- Order an electronic ZIP + 4® database from the United States Postal Service® and develop their own address-matching software.
- Lease or purchase software from an outside vendor and convert their own lists.
- Subcontract their conversion through a service bureau.
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.
This document provides a sample of a ZIP + 4 .txt file.
This document provides a sample of a ZIP + 4 Transaction .txt file.
The Address Information System (AIS) Products Technical Guide contains documentation on all AIS products, including Residential Delivery Indicator (RDI), Z4Change, ZIPMove, Zip+4, Five-Digit Zip Product, eLOT, Carrier Route Product, City State Product, and Delivery Statistics Product.
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.
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.
This form is used to create a Web-based account with the National Customer Support Center (NCSC) which will be utilized to retrieve/download files from the Electronic Product Fulfillment (EPF) website.
AIS Viewer is an interactive application designed to provide the ability to retrieve, view, and print accurate and current ZIP Code™ information for all 50 states.
The Carrier Route Product provides reference information needed to apply carrier route codes to addresses for presort postage discounts.
The City State Product is a comprehensive list of city, county, and Post Office names associated with each ZIP Code™.
The Delivery Statistics Product defines the number of post office boxes and business/residential deliveries on city, rural, and highway contract routes for every ZIP Code™ in the United States.
The eLOT product allows mailers the ability to sort their mailings in approximate carrier-casing sequence.
The Five-Digit ZIP® Product provides five-digit ZIP Code™ data that can be appended to computerized mailing lists via address-matching software.
Z4Change Product provides mailers the information necessary to create an application that would facilitate frequent and cost-effective processing for updating very large computerized mailing lists for automation compatibility and improved deliverability.