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

Unofficial results

 

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

News

TAX NOTICE

NOTICE OF 2026 1st Half of REAL PROPERTY Taxes and 2nd Half of 2026 MOBILE HOME taxes DUE 11/30/2026 As Per MCA 15-16-101 Notice is hereby given that the 1st half Real Property Taxes and 2nd half 2026 Mobile home Taxes will be due and payable before 5 p.m. on November 30th, 2026. Unless paid ON or PRIOR to that time, the amount then due will be delinquent and will draw interest at the rate of 5/6 of 1% a month from the time of delinquency until paid and 2% will be added to the delinquent taxes as a penalty. Payment of Taxes may be made in person between 8 a.m. and 5p.m. Monday through Friday at the Rosebud County Treasurers office. Taxes paid in person must be paid before 5 p.m. on November 30th,2026 or penalty and interest will be added to the delinquent portion. Payments made by mail must be post marked by November 30th, 2026 to avoid penalty and interest. Payments can be made online at rosebudcountymt.gov. Online payments will begin to assess penalty and interest beginning at 5 p.m. on November 30th 2026. Payments Should be mailed to: Rosebud County Treasurer PO Box 167 Forsyth, MT 59327   Online payments can be made at rosebudcountymt.gov on the treasurer’s page.   Ashley Bell Rosebud County Treasurer 1200 Main Street 406-346-7661

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.


Upcoming Events

GENERAL ELECTION DAY – Holiday

 November 3, 2026

NOTICE OF PUBLIC MEETING

 November 10, 2026

VETERANS’ DAY – Holiday

 November 11, 2026

 

 

 

 

 

Rosebud County
1251 Main Street
Forsyth, MT 59327

Rosebud County