DELIVERY - Clarkson Post Office (14430) - Suspended Temporarily

INFORMATIONAL - Reminder - Central Area AIM In-Person Meeting 2026 Invitation - JUNE 30th 2026

June 11 2026 USPS Ship R27.0.3.0 Release Notes

INFORMATIONAL - Commercial System Release - June 4, 2026

INFORMATIONAL - Major USPS Pricing Shifts July 2026 - What Mailers Need to Know

June 4 2026 USPS Ship R27.0.2.0 Release Notes

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes

These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.

INFORMATIONAL - USPS Modernization Through Package Equipment Upgrades in June 2026

DELIVERY - Corte Madera Post Office - Temporarily Closed

PCC Events (June 2026)

IMpb/IMmb Electronic File Transmission Requirements

INFORMATIONAL - RESOLVED - Enterprise Payment System – Incident #10716992 Issues with Postage Statement Finalization, ACH Withdrawal Details Missing from Data Feeds

Known Issues List 6.2.2026

Occupancy Trends License Agreement

ZIP Codes by Area and District codes

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

INFORMATIONAL - 2nd Reminder - USPS Enhanced Addresses API – Coming July 2026

INFORMATIONAL - Mail Spoken Here - May Issue

May 2026 Nixie Volume

This spreadsheet contains the UAA statistics for May 2026.

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.

Automated Zone Indicator (AZI) Table

The AZI table lists each five-digit ZIP Code™ and is an indicator of the type of processing that typically takes place on letter mail destined for each ZIP Code. Each number in the file is a ZIP Code appended with a numeric zone indicator. The five numeric indicators are as follows:

1. Two Pass Zones: Automated two-step sector/segment at mail processing facilities
2. 876 Carrier Route Sort Zones: Automated incoming secondary carrier route sorting at plants
3. Carrier Route Barcode Sorter (CSBCS) Zones: Automated walk sequence sorting on CSBCS machines at delivery units
4. Delivery Barcode Sorter (DBCS) Zones: Automated walk sequence sorting on DBCS machines at plants [i.e., sectional center facilities (SCFs)] or at delivery units
5. Manual/Mechanized Zones: No automated sorting; no tracking code scans should be generated from facilities matched to these ZIP Codes

PCC Insider May 2026 Special Edition

INFORMATIONAL - Commercial System Releases (June 6 – June 12)

Processing and Distribution - Memphis TN Regional Processing and Distribution Center (RPDC) Expands Operations May 30, 2026

Processing and Distribution - UPDATE - Western Region – Tucson, AZ Processing and Distribution Center (P&DC) - Power Restored

July 2026 Release Notes

Population Mobility Trends Order Form

DELIVERY - Diplomatic Post Office (DPO) May 28, 2026

USPS Ship Zone Tech Sheet

PTR2 Release Notes_DD_05_30_26

Mailers Technical Advisory Committee (MTAC): Association Membership Form

Population Mobility Trends 12-Month Historical (CSV) Sample File

Occupancy Trends Order Form

Occupancy Trends Congressional District Vacant File (TXT) Sample File

Occupancy Trends County Vacant File (TXT) Sample File

Occupancy Trends Route Vacant File (TXT) Sample File

Occupancy Trends ZIP Code Vacant File (TXT) Sample File

Occupancy Trends Technical Guide

USPS Population Mobility Trends License Agreement (Sample Only)

Population Mobility Trends Technical Guide

Population Mobility Trends Summary (CSV) Sample File

Population Mobility Trends 48-Month Historical (CSV) Sample File

PTR2 Release Notes_DD_05_28_26

INFORMATIONAL - Commercial System Releases (May 30 – June 5)

PTR2 Release Notes_DD_05_26_26

Labeling List Changes Effective July 1, 2026

Effective July 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L007, L009, L012, L016, 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 July 1, 2026, effective date through August 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22704.


 

INFORMATIONAL - July Price Change 2026 - Commercial System Releases June 28, 2026

INFORMATIONAL - Scheduled Commercial System Release - June 28, 2026

PROCESSING AND DISTRIBUTION - Western Region – Tucson, AZ P&DC - Power Outage

Mail Service Provider (MSP) - Full-Service Certified Mailers

A Mail Service Provider (MSP) offers a variety of solutions to prepare and present Full-Service presort mailings. For more information regarding Certified MSPs, please follow this link: https://postalpro.usps.com/full-service-cert/fact-sheet

PROCESSING & DISTRIBUTION: Tampa, FL Regional Processing & Distribution Center (RPDC) Modernizes Operations on May 25, 2026