Beaverhead County
Sign in to savecounty in Montana, United States
Key facts
- Country
- United States
- State
- Montana
- Seat
- Dillon
- Largest city
- Dillon
- Total
- 5,572 sq mi (14,430 km )
- Land
- 5,542 sq mi (14,350 km )
- Water
- 30 sq mi (78 km ) 0.5%
- Estimate 2025
- 10,043
- Density
- 1.8/sq mi (0.69/km )
- Time zone
- UTC−7 ( Mountain )
- Summer dst
- UTC−6 ( MDT )
- Congressional district
- 1st
- Website
- www .beaverheadcounty .org
via Wikipedia infobox
Article
Beaverhead County is the largest county by area in the U.S. state of Montana. As of the 2020 census, the population was 9,371. Its county seat is Dillon. The county was founded in 1865.
Much of the perimeter of the county is the Continental Divide, including its entire border with the state of Idaho. The divide heads east into Montana at the county border with Ravalli County, between Lost Trail Pass and Chief Joseph Pass.