ZIP Codes by Area and District codes

The Excel spreadsheet lists ZIP Codes with the associated Area and District Codes.  

Labeling List Changes Effective November 1, 2025

Effective November 1, 2025, the Postal Service™ will revise Labeling List(s) L007, L012, L015, L051, L201, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the November 1, 2025, effective date through December 31, 2025, expiration date. The changes will be published in the Postal Bulletin, Issue #22687.

2026 Labeling List and Mail Direction File Schedule

This is the Labeling Lists production schedule for 2026.

Mail Quality Data through IV®-MTR Data Dictionary

USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application.

August 2025 Nixie Volume

This spreadsheet contains the UAA statistics for August 2025.

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker

This document provides a list of active IV-MTR work to be as well as items completed in FY25.

*Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.

July 2025 Nixie Volume

This spreadsheet contains the UAA statistics for July 2025.

Labeling List Changes Effective September 1, 2025

Effective September 1, 2025, the Postal Service™ will revise Labeling List(s) L007, L012, L051, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the September 1, 2025, effective date through October 31, 2025, expiration date. The changes will be published in the Postal Bulletin, Issue #22682.

Catalog Insights Template

If the downloadable ZIP file does not work, please email MailingPromotions@usps.gov with Subject Line:

"Requesting Catalog Insights Promotion Batch Upload Template"

This will open a request and a Program Manager will send you the template shortly. Thank you.