Sweetwater County is named for the Sweetwater River which a tributary of the North Platte River.
Surrounding County Courthouses:
N – Sublette County and Fremont County
E – Carbon County
S – Daggett County, Utah and Summit County, Utah
W – Uinta County and Lincoln County
Created: December 27, 1867 
County Seat:
Green River 1868 – present
County Courthouse – Green River
Location: 80 West Flaming Gorge Way / North Center Street
Built: 1965 – 1967
Style: Modern
Architect: Kellogg & Kellogg
Contractor: L M Olson, Inc.
Description: The building faces south and is a three story buff colored brick, concrete and glass structure. The building is located on landscaped grounds in the center of Green River and sits on a slope. There are vertical dividers along the south side with glass windows between on the main story and lattice work on the upper stories. The roof line is flat. The building houses the County District Court and County Circuit Court of the 3rd Judicial District.
County Justice Center – Rock Springs
Location: 50140 US Highway 191 South
Built: 2016 – 2018
Style: Modern
Architect: EDA of Salt Lake City, Utah
Contractor: Groathouse Construction Inc. of Laramie.
Description: The building faces south and is a one story multi colored brick, concrete and glass structure. The building is located on landscaped grounds to the southwest of the center of Rock Springs and being 1.4 miles south of Interstate 80. Bricks of different hues echo the striations of the surrounding buttes, while reused snow fence boards lend concrete walls a rustic texture. Deep reveals in the walls refer to the ongoing process of erosion found throughout the landscape. The roof line is flat. In the interior, the central lobby balances highly refined millwork with the rough concrete. There are grille ceilings overhead. The two courtrooms have beetle kill pine panels and millwork which focus on the judge, witness stand, and lectern. The building is part of the County Justice Center and houses the County Circuit Court of the 3rd Judicial District
Former County Circuit Court – Green River
Location: 177 North Center Street / West 2nd North Street
Built: 1906 – 1907
Style: Classical Revival
Architect: William Dubois
Contractor: Unknown
Description: The building faces east and is a one story buff colored brick structure. The building is located on landscaped grounds in the center of Green River on the north side of the courthouse. The building has a raised basement and is located on a slope with steps descending along the slope. The east front has a portico with two columns rising to a wide pediment. The red colored roof is hipped. The building was constructed as a library and in 1981, the building was converted into a court facility and county office. The courtroom was located on the first story. The architect was Dolence & Frullo and the contractor was Constatini Construction Company Inc. The building housed the County Circuit Court of the 3rd Judicial District until 2018 when it moved to the courthouse and County Justice Center.
See: The 3rd Judicial District includes Lincoln County and Uinta County.
History: The county was created in 1867 as Carter county with county seat at South Pass City ( which is now in Fremont County ). The county name was changed to Sweetwater in 1869 and Green River was selected as the county seat in 1875. The first courthouse was built in 1876. An addition was constructed in 1908. The courthouse was torn down when the second and present courthouse was constructed in 1965 to 1967. The County Justice Center was constructed in 2016 to 2018.
County Courthouse – Green River
Picture 1876 County Courthouse
Picture 1876 County Courthouse with 1908 Addition
Circuit Court Courthouse – Green River
Photos taken 2009 and 2013