ZIP Code Boundaries Sample File

Emerging Roads 1-year GeoJSON Sample File

Emerging Roads 30-days GeoJSON Sample File

Emerging Roads 1-year Geodatabase Sample File

Emerging Roads 30-days Geodatabase Sample File

Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACS^Link®.

August 2026 Nixie Volume

This spreadsheet contains the UAA statistics for August 2026.

July 2026 Nixie Volume

This spreadsheet contains the UAA statistics for July 2026.

Labeling List Changes Effective September 1, 2026

Effective September 1, 2026, the Postal Service™ will revise Labeling List(s) L007, L008, L012, L016, L201, L606, and L607 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, 2026, effective date through October 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22708.

 

Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q3 FY26)

ACS Nixie stats by industry for FY26 Q3.

June 2026 Nixie Volume

This spreadsheet contains the UAA statistics for June 2026.

Informed Delivery® Post-Campaign (IDPC) Data through IV-MTR® Data Dictionary

This document describes the Informed Delivery Post-Campaign (IDPC) data fields available through the IV-MTR application.

Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)

This document provides the updated service type codes for  Intelligent Mail® Package Barcodes.

May 2026 Nixie Volume

This spreadsheet contains the UAA statistics for May 2026.

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

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

Population Mobility Trends Summary (CSV) Sample File

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

April 2026 Nixie Volume

This spreadsheet contains the UAA statistics for April 2026.

PTR2 Domestic Scan Events and Descriptions

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Operation Codes List

This spreadsheet provides a list of operation codes (opcodes), also known as Scan Event Codes, for the IV-MTR application.

PTR Domestic Scan Events and Descriptions