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Printer Friendly 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 and is available in its entirety or by selected states. Mailers must purchase or develop their own matching software in order to use this file. The ZIP + 4 file is available on cartridge or CD-ROM on a monthly or quarterly basis, and changed ZIP + 4 Code information is available monthly. To convert mailing lists to ZIP + 4, mailers can:
A sample ZIP + 4 file is available for download. For more information, please call the National Customer Support Center at 1-800-238-3150. Links
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