Prairie County is named for the prairie land of the Great Plains within the county.
Surrounding County Courthouses:
N – McCone County and Dawson County
E – Dawson County and Wibaux County
S – Fallon County and Custer County
W – Garfield County
Created: February 5, 1915 
County Seat:
Terry 1915 – present
County Courthouse – Terry
Location: 217 West Park Street / Logan Avenue
Built: 1997 – 1998
Style: Modern
Architect: Stevenson Design of Miles City
Contractor: Fire Mountain Construction of Colstrip
Description: The building faces south and is a one story gray metal clad structure. The south front has a central entrance with small windows towards the east side. The roof is pitched.
History: The county was created in 1915 and Terry was selected as the county seat. The first courthouse was a one story frame structure built in 1915. The courthouse was damaged by fire in 1995 and is located on Garfield Street. The second and present courthouse was constructed in 1997 to 1998.
County Courthouse – Terry
Photos taken 2009