Skip to main content
TOP

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.

First Class Mail
Parcels
Periodicals
Standard Mail
Software Developer

Description

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.
No vendor information posted for this page yet.

Featured Resources

Related Products

Address Information System (AIS) Viewer

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.

Carrier Route Product

The Carrier Route Product provides reference information needed to apply carrier route codes to addresses for presort postage discounts.

City State Product

The City State Product is a comprehensive list of city, county, and Post Office names associated with each ZIP Code™.

Delivery Statistics Product

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.

Enhanced Line of Travel (eLOT®)

The eLOT product allows mailers the ability to sort their mailings in approximate carrier-casing sequence.

Five-Digit ZIP® Product

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

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.

ZIPMove Product

ZIPMove Product offers a means of correcting addresses that have undergone a ZIP Code™ realignment in which a change in city name and finance number occurred.

Contact

 

For more information about AIS Viewer and other addressing tools, contact the National Customer Support Center at 800-238-3150 Call: 800-238-3150, or at incsc@usps.gov.

Feedback