Stillwater County, in south central Montana, has terrific opportunities for those who live in it and those who would like to visit. Columbus, the County Seat, sits in the center of Stillwater County. I-90, Highway 78 and the Rapelje Road, major roads, all meet at Columbus.

Whether it is fishing the rivers and streams, floating the Yellowstone and Stillwater Rivers, hunting in the Beartooth Mountains, biking from Rapelje, the Running of the Sheep in Reed Point, Art Walks in Absarokee, or any other of the activities, Stillwater County is the place to be.


As of the census of 2010, there were 9,117 people, 5,234 households, and 3,883 families residing in the county. The population density was 5 people per square mile (2/km²). There were 3,947 housing units at an average density of 2 per square mile (1/km²). The racial makeup of the county was 96.78% White, 0.10% Black or African American, 0.80% Native American, 0.32% Asian, 0.02% Pacific Islander, 0.42% from other races, and 1.57% from two or more races. 2.01% of the population were Hispanic or Latino of any race. 29.7% were of German, 11.8% Norwegian, 10.8% English, 10.6% Irish and 6.8% American ancestry according to Census 2010.

Stillwater County Offices


Road Department 406-328-4210


Alternative 406-322-4121
Appraisal & Classification 406-322-8015
Attorney 406-322-4333
Clerk & Recorder 406-322-8000
Clerk of District Court 406-322-8030
Commissioners 406-322-8010
Conservation District 406-322-5359
Environmental Health 406-322-8055
Fairgrounds 406-322-8560
Family Services 406-322-4821
Human Resources/Finance 406-322-8014
Justices of the Peace 406-322-8040
Juvenile Probation 406-322-8045
Library 406-322-5009
MSU Extension Service 406-322-8035
Mental Health Center 406-322-4514
Motor Vehicle 406-322-8020
Public Assistance Department 406-322-5331
Planning Office 406-322-8050
Road & Bridges Department 406-322-5335
Rural Addressing 406-322-8060
Sheriff Non-Emergency 406-322-5326
Solid Waste 406-322-5364
Stillwater Pavillion 406-322-8560
Superintendent of Schools 406-322-8057
Treasurer/Accessor 406-322-8020
Victim Witness Advocate 406-322-8003