Treasure County is named for the rich mineral resources in the area and promotionally to attract new settlers.
Surrounding County Courthouses:
N – Rosebud County
E – Rosebud County
S – Big Horn County
W – Yellowstone County and Musselshell County
Created: February 7, 1919 
County Seat:
Hysham 1919 – present
County Courthouse – Hysham
Location: 307 Rapelje Avenue / Spurling Street
Built: 1959 – 1960
Style: Modern
Architect: Morrison-Maierle & Associates
Contractor: Cerovski Cement Products of Lewistown
Description: The building faces north and is a one story red colored brick, concrete and glass structure. The building is located on landscaped grounds in the center of Hysham. The building has a projecting entrance section on the north side with glass walls and doorways. There is another entrance on the southwest side where a map of the county is outlined in brick on the west side wall. The building has a flat roof line. The building houses the County District Court of the16th Judicial District.
See: The 16th Judicial District includes Carter County, Custer County, Fallon County, Garfield County, Powder River County, Rosebud County and Treasure County.
History: The county was created in 1919 and Hysham was designated as the county seat. The county used rented premises. The courthouse was constructed in 1959 to 1960.
County Courthouse - Hysham
Photos taken 2009 and 2015