To reflect U.S. Postal Service® ZIP Code™ realignment efforts, ZIPMove data files were created to assist address-matching software in providing up-to-date, accurate ZIP + 4® codes.

The primary objective in creating this product was to maximize mailers' ZIP + 4 code matching potential in situations in which ZIP Code realignments have taken place and a change in city name and/or finance number has occurred (which normally prevents address-matching software from determining the newly assigned ZIP Code).

Mailers are encouraged to incorporate ZIPMove as a regular part of their address hygiene process for the purpose of correcting addresses that have undergone a ZIP Code realignment in which a change in city name and/or finance number occurred.

A sample ZIPMove file is available for download.