Sweet Grass County is named for the abundance of sweet grass in the county.
Surrounding County Courthouses:
N – Wheatland County
E – Golden Valley County and Stillwater County
S – Stillwater County and Park County
W – Park County and Meagher County
Created: March 5, 1895 
County Seat:
Big Timber 1895 – present
County Courthouse – Big Timber
Location: 200 West 1st Street / Hooper Street
Built: 1897 – 1898
Style: Romanesque
Architect: F S Hornbeck
Contractor: Anderson & Wagner
Description: The building faces east and is a two story rusticated sandstone and concrete structure. The building is located on landscaped grounds in the center of Big Timber. The east front has an arched entrance in the center of the first story. There is an arched entrance on the south side. The building has a red colored roof. In the interior, the courtroom is located on the north side of the second story. The building houses the County District Court of the 6th Judicial District and County Justice Court. An addition was built on the west and north sides in 1928 and the courthouse was remodeled deleting the tower. The architect was J G Link, Inc. of Billings
See: The 6th Judicial District includes Park County and Sweet Grass County.
History: The county was created in 1895 and Big Timber was selected as the county seat. The first and present courthouse was constructed in 1897 to 1898 at a cost of $9,590.
County Administration – Big Timber
Location: 115 West 5th Avenue / Hooper Street
Built: Unknown
Style: Modern
Architect: Unknown
Contractor: Unknown
Description: The building faces north and is a one story dark red colored brick and concrete structure. The building is located on landscaped grounds in the center of Big Timber and is called the Courthouse Annex. The north front has a glass panel entrance. The roof line is flat.
County Courthouse – Big Timber
Commissioner Minutes – 1898
County Administration – Big Timber
Photos taken 2011, 2012 and 2022