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The Labeling Lists Data Product assists mailers with presorting mail. It provides active, originating 3- and 5-digit ZIP Code data along with their destination locations [including city/state/ZIP Code] for labeling purposes.

The product contains a complete set of data files for each list available online via Postal

Explorer at http://pe.usps.gov/text/LabelingLists/Labeling_Lists.htm. Updates to the Labeling Lists are published in the Postal Bulletin.

Contact Information:

Important Updates

The "Heartbleed" bug hasn't affected Postal Service websites that require customers to provide usernames and passwords, according to USPS IT and the Corporate Information Security Office (CISO). To learn more information, click here.


Standard Mail DSCF Load Leveling Final Rule Published in the Federal Register

The Postal Service has released its Federal Register final rule revising the service standards for Standard Mail that is eligible for Destination Sectional Center Facility (DSCF) rates. These changes will allow a more balanced distribution of DSCF Standard Mail across delivery days. With its new rules, USPS is extending delivery expectation to four days for mail entered on Friday and Saturday. National Implementation began April 10, 2014.


January 2014 Price Change Fact Sheets


Getting Started with Full-Service Intelligent Mail


PostalOne! Contingency Plan

For mailers unable to submit electronic information, click here for the PostalOne! Contingency Plan.











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