⚠ Starting May 1, 2026, automatic monthly credits top-offs will require account verification. If you’ve already completed verification, your monthly top-off will continue without interruption. Verify your account to keep your credits automatically topped off each month.

Enter a 5-Digit ZIP Code

Use the Carrier Route Map lookup to search a ZIP Code and see the USPS carrier route maps with boundaries displayed along with additional information such as number of deliverable addresses, types of routes and more.

  • View a list of carrier routes within a given ZIP Code.
  • Displays a ZIP Code boundary and the Carrier Route centroids.
  • Carrier Route Counts updated on 04-03-2026
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Contact Email: tech@melissadata.com,    Telephone: 1-800-635-4772