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.
Live Chat Hours
Live Chat hours are 9:00 am to 4:00 pm, Mountain Time, Monday through Friday. Chatbot resources can be accessed 24/7.
For inquiries regarding appeals originating from Colorado, New Mexico, Wyoming or Federal Agencies, email CA10_Team1@ca10.uscourts.gov.
For inquiries regarding appeals originating from Oklahoma, Kansas, Utah or the U.S. Tax Court, email CA10_Team2@ca10.uscourts.gov.
For inquiries regarding appeals that are set for oral argument, email 10th_Circuit_Calteam@ca10.uscourts.gov.
For general Clerk's Office inquiries, please email Clerk@ca10.uscourts.gov or click this button:
Phone Numbers
Clerk's Office Main Phone:
303-844-3157
Attorney Admissions:
303-844-3157
Team 1 (Colorado, New Mexico, Wyoming or Agency cases):
303-335-2729
Team 2 (Oklahoma, Kansas, Utah or Tax cases):
303-335-2728
Calendar Team (for cases set for argument):
303-335-2708