
Colstrip
- County:
- Rosebud County
- County Seat:
- No
- Area (mi²):
- 4.046
- State:
- Montana
Colstrip is a city located in Rosebud County, Montana. Colstrip has a 2025 population of 2,031. Colstrip is currently declining at a rate of -0.59% annually and its population has decreased by -2.82% since the most recent census, which recorded a population of 2,090 in 2020.
The average household income in Colstrip is $98,617 with a poverty rate of 9.1%. The median age in Colstrip is 43.5 years: 46.1 years for males, and 42.7 years for females.