ZIP Code Authentication

Please enter your ZIP code to verify residency within the district and click "Go to the Next step" when complete.

* Indicates a required field

Please enter your 5 digit code to verify residency and go to the next step.
+4 Extension is only needed for ZIP codes on the border between different districts.

To lookup your 9 digit ZIP code, please check the U.S. Postal Service website for more information.

Please contact one of our offices for assistance if you have difficulties completing this form. 

Office Locations

Washington DC Office
503 Cannon House Office Building
Washington, DC  20515
Phone: (202) 225-2095
Fax: (202) 225-5609
Antioch District Office
4703 Lone Tree Way
Antioch, CA  94531
Phone: (925) 754-0716
Fax: (925) 754-0728
Walnut Creek District Office
3100 Oak Road
Suite 110
Walnut Creek, CA  94597
Phone: (925) 933-2660
Fax: (925) 933-2677