COVID-19 Updates:

We will be posting updates concerning how the COVID-19 is affecting our county.

Telephone Number for County offices

Montana Response to COVID-19

SCAMS Related to COVID-19: Protect Yourself from More than the Virus

Thank you for your help and patience during these difficult times.
To help protect you and our staff the District Court and Clerk of Court’s office will require a mask or face covering to be worn by the public accessing the Third Floor of the Rosebud County Courthouse until further notice.
If you have any questions please call 346-7322.

Welcome to Rosebud County

Rosebud County was established on February 1, 1901 and is located in Southeastern Montana covering approximately 5,027 square miles (5,010 square miles is land and 17 square miles is water). The county Courthouse began construction in Forsyth in 1912, for more history on our Courthouse visit our Resource page. Rosebud County is Montana’s twenty-second most populous county, with an estimated population of 9,329 as of the latest census.

Other cities and towns in Rosebud County include Angela, Ashland, Birney, Colstrip, Hathaway, Ingomar, Lame Deer, Rosebud, and Sumatra. A large portion of the Northern Cheyenne Indian Reservation lies within Rosebud County.

  • Rosebud County is the fourth largest County by land area in the State of Montana.
  • Topography of Rosebud County is mostly rolling with small hills.  Elevations range from 1500 feet above sea level near the Yellowstone River to 4200 feet in the southern portion of the County near Ashland, adjacent to Custer National Forest.
  • The County’s leading source of income are from agriculture, tourism, railroad, coal mining and electrical generation.
  • There are 1,165 miles of County road.
  • Medical facilities are located in Ashland, Lame Deer, Colstrip and Forsyth.

82.06 ° Forsyth, MT


NOTICE- Domesticated pets have been seen

leaving town and harassing calves.  For the safety of your family pets and new born calves we are asking that you keep your pets locked up and don't let them roam around or out of town.

2021 Rosebud Treasure County Fair

July 21-24, 2021 July 21-22 - PRCA Rodeo July 23 - Demolition Derby July 24 - Headliner is Tracy Byrd with Junebugs opening Free Stage with the Junebugs daily and Illusionist Chris Mabrey. Also daily is the Mighty Thomas Carnival. Tickets go on sale May 1st, 2021