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.

 

General Federal Election November 3, 2026

Close of Regular Registration October 5, 2026
Absentee Ballots mailing October 9, 2026

 

[weather zip="59327" label="Forsyth, MT"] courthouse

News

FRAUD ALERT

FRAUD ALERT: The County has been made aware of fraudulent letters claiming recipients have outstanding taxes and threatening action, often providing an 1-800 phone number. Please do not provide payment or personal information in response to these letters. Official tax notices will come directly from the County Treasurer’s Office or the IRS. To verify whether you have outstanding taxes, please contact our office (406-346-7661) or check the Treasurer's page for the Delinquent Taxes.

ROSEBUD COUNTY GROWTH POLICY – RESIDENT SURVEY

The County is in the process of updating its Growth Policy. The document will be a guide for addressing the various issues and opportunities that the County faces, including the impacts of plant closures at Colstrip.
 
Your advice and guidance is essential to making this project a success. Please take the time to complete either an online survey available here
or to fill out a hard copy version. Hard copies are available here. Completed hard copies can be returned to County Commission Office’s. If you have questions about the project or the survey, please contact Jerry Grebenc at Great West Engineering 406-495-6153.


Upcoming Events

LABOR DAY – Holiday

 September 7, 2026

COLUMBUS DAY – Holiday

 October 12, 2026

GENERAL ELECTION DAY – Holiday

 November 3, 2026

 

 

 

 

 

Rosebud County
1251 Main Street
Forsyth, MT 59327

Rosebud County