Data Files
10/05/2026
AISU ZIP Code File (AISUZIPS.TXT)
Data Files
10/05/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
10/05/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
10/05/2026
Area District Finance File (AREADIST.TXT)
Data Files
10/05/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
10/05/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Data Files
10/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q4 FY26)

ACS Nixie stats by industry for FY26 Q4.

Data Files
10/01/2026
September 2026 Nixie Volume

This spreadsheet contains the UAA statistics for September 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.  

Data Files
10/01/2026
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File