Buffalo County

US States / O-U / South Dakota / Buffalo County

Buffalo County is named for the wild bison which roamed the prairie region.


Surrounding County Courthouses: 

N – Hyde County and Hand County

E – Jerauld County

S – Brule County

W – Lyman County
Created:  January 6, 1864                      Map of South Dakota highlighting Buffalo County

County Seat:

Duncan             1871 – 1885

Gann Valley      1885

Buffalo Center  1886 – 1888

Gann Valley      1888 – present


County Courthouse – Gann Valley


Location:   112 Osman Avenue

Built:  1977 – 1978

Style:  Modern

Architect:  Dana, Larson & Roubal

Contractor:  Boldt Construction of Miller


Description:  The building faces west and is a one story buff colored brick and cement block structure. The building is located on spacious landscaped grounds in the center of Gann Valley. The entrance is on the northwest corner. The front is symmetrical with three bays of which the center bay projects. There are few windows in the small building. The roof line is flat. The courtroom is located on the east side.


History:  The first county seat was Duncan. In 1885, the county seat was moved to Gann Valley and then to Buffalo Center in 1886. The county seat returned to Gann Valley in 1888. The firsst courthouse was a two story wood frame structure designed by Clarence Beelman and built in 1914. The building was demolished and the third and present courthouse was constructed at a cost of $250,000.




County Courthouse – Gann Valley 

























Photos taken 2006 and 2016