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Contact Information

NOTE: Based on recommendations from public health authorities, the Tenth Circuit Clerk’s Office is operating on maximum telework status for social distancing purposes. Responses to phone messages may be delayed, and we strongly encourage all inquiries to be submitted via email.  You may also use our Drop Box for filing in person.

Business Hours

8:00 am to 5:00 pm, Mountain Time, Monday through Friday, except legal holidays

Court Address

Byron White U.S. Courthouse
1823 Stout Street
Denver, CO 80257-1823.


For inquiries regarding appeals originating from Colorado, New Mexico, Wyoming or Federal Agencies, email

For inquiries regarding appeals originating from Oklahoma, Kansas, Utah or the U.S. Tax Court, email

For inquiries regarding appeals that are set for oral argument, email

For general Clerk's Office inquries, please email or click this button:

Email the Clerk's Office

Phone Numbers

Clerk's Office Main Phone:

Attorney Admissions:

Team 1 (Colorado, New Mexico, Wyoming or Agency cases):

Team 2 (Oklahoma, Kansas, Utah or Tax cases):

Calendar Team (for cases set for argument):