Publications
10/01/2026
Publications
10/01/2026
Publications
10/01/2026
Publications
10/01/2026
Data Files
10/01/2026
ZIP Codes by Area and District codes

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

Presentations
09/30/2026
PS Form 6015 Nonprofit Database Change Request

Pricing and Classification Service Center has revised PS Form 6015, Nonprofit Database Change Request to streamline the process of submission. This presentation is a tutorial on how to complete and submit the form.

Presentations
09/30/2026
PS Form 1500 Application for Listing and/or Prohibitory Order

Pricing and Classification Service Center’s presentation on PS Form 1500,  Application for Listing and/or Prohibitory Order with voiceover. 9/30/2026

Presentations
09/30/2026
PS Form 3510 Application for Reentry or Special Price Request

PS Form 3510 Reentry presentation with voiceover_9.30.26

User Guides
09/30/2026
Provisioning EMAS API Invoices Data in Informed Visibility® Mail Tracking & Reporting (IV®-MTR)

This guide provides instructions for receiving EMAS API Invoices data through the IV Mail Tracking & Reporting application.

Release Notes
09/30/2026
USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

Release Notes
09/29/2026
Publications
09/28/2026
Labeling List Changes Effective November 1, 2026

Effective November 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L007, L012, 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, 2026, effective date through December 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22713.

Data Files
09/28/2026
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. Please note that items in bold text were updated or added recently.