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 8,329 as of the latest census in 2020.

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 2,441 feet above sea level near Hathaway to 4,807 feet above sea level in the Little Wolf Mountains west of Colstrip.
  • 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.



66.2 ° Forsyth, MT



On Thursday, August 1, 2024 the Rosebud County Treasurer will attach a property lien to the property on which the 2023 taxes are delinquent.  The delinquent taxes, including penalties, interest and costs are a lien upon the property and that unless delinquent taxes, penalties, interest and costs are paid prior to August 1, 2024 a tax lien will be attached and may be assigned to a third party.  MCA 15-17-122 A complete list of all property on which taxes are delinquent is on file in the office of the Rosebud County Treasurer and is open to public inspection and examination Monday through Friday from 8am to 5pm. For further information please contact the Rosebud County Treasurer at 1200 Main Street, PO Box 167, Forsyth, MT 59327 or 406-346-7661

Text My Gov Announcement

                  Rosebud County is excited to launch TextMyGov, a new, smart text messaging service!  Residents can receive important notifications and text the County to find information. Rosebud County will officially launch the new text messaging system to the public on Wednesday, April 10th, 2024. Residents may receive a text message from 91896 from Rosebud County. You can choose to opt-out at any time by texting STOP. If you did not receive the initial message, you can choose to opt-in by texting the keyword “ROSEBUDALERTS” to the number 91896. After sending the initial keyword, you will be asked to reply “YES” to confirm opt-in. Residents may receive notifications for tax bill notices, office closures, election information, etc. Residents can also find quick information 24/7. Just text 1-2 keywords to 410-416-4464. You can get quick information on events, elections, forms, taxes, etc. To get started, text to the County’s TextMyGov number 410-416-4464. Rosebud County is excited for this new way of communicating with residents and we look forward to sharing important notifications. Other governmental entities across the country are utilizing this system with great success. Stay informed, stay ahead. Msg & data rates may apply. Check with your carrier for details. View terms and privacy policy info at: textmygov.com/opt-in-terms-conditions  

Upcoming Events

Labor Day – Holiday

September 2, 2024