Fact Sheets
12/03/2025
Addressing Fact Sheet for First-Class Flats

This document is for mailers who are sending flat-size mail (such as large envelopes) at Automation and Presorted First-Class Mail prices. To use these prices, you must mail at least 500 pieces at a time, prepared and sorted according to Postal Service guidelines.

Announcements
12/02/2025
DELIVERY: Winter Weather Update
FAQs
12/01/2025
PTR2 FAQs
Publications
12/01/2025
PCC Events (December 2025)
Data Files
12/01/2025
November 2025 Nixie Volume

This spreadsheet contains the UAA statistics for November 2025.

Data Files
12/01/2025
ZIP Codes by Area and District codes

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

Data Files
12/01/2025
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
12/01/2025
City/State ZIP Code Weekly Compare
Data Files
12/01/2025
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
12/01/2025
AIS Congressional District File (CONG_DIST.TXT)