Joseph C. O'Mahoney Federal Center
2120 Capitol Avenue
Cheyenne, WY 82001-3633
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Hours of Operation:
7:30 a.m. - 5:30 p.m.
Mon. - Fri., except holidays
U.S. District Courts, U.S. Post Office, U.S. Marshal Service, U.S. Attorneys, U.S. Bankruptcy and U.S. Probation
The Joseph C. O'Mahoney Federal Center is the largest GSA-owned property in the state, and was named after the politician, attorney, and U.S. Senator Joseph Christopher O'Mahoney (1884-1962).
Built in 1964 as a U.S. Post Office/Courthouse of pre-cast reinforced concrete in the Formalist style of the modern era, this building was originally built to provide quality office and work space for the U.S. District Courts and related judicial entities, as well as for the U.S. Post Office and personnel of various other federal agencies. It continues to be used in this way.
The building site covers approximately 1.7 acres. The building has eight floors, a basement and penthouse. It stands approximately 108 feet tall and has three passenger elevators, plus one freight elevator. It provides 156,942 rentable square feet of space for more than 200 federal employees.
Directions & ParkingParking is available on federal grounds as well as neighboring commercial lots and parking garages.
Click the directions link to enter starting address and generate detailed directions.
Report a Maintenance Issue
For more information on facility repairs, space renovations, or to report a building maintenance issue, please call (307) 772-2341 or send an email to the Rocky Mountain Call Center.
- Vending machines
- Underground parking for 81 vehicles
Historic evaluation of the building may occur in 2014.
Art in Architecture Program
- GSA's Art in Architecture program secured an artist, Joe Arnold, who provided an oil on canvas print for the building