Publications
10/01/2026
Combined Service Standard Directory-PKG
Publications
10/01/2026
Combined Service Standard Directory-PFC
Publications
10/01/2026
Combined Service Standard Directory-PER
Publications
10/01/2026
Combined Service Standard Directory-MKT
Publications
10/01/2026
Combined Service Standard Directory-GAH
Publications
10/01/2026
Combined Service Standard Directory-FCM
Publications
10/01/2026
3D Base Service Standard Directory
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.  

Announcements
09/30/2026
INFORMATIONAL - USPS APIs System Release Notification - October 14, 2026
Announcements
09/30/2026
INFORMATIONAL - USPS Expands Addressing and Geospatial Data Offerings