Beaverhead County's 2026 population is estimated at 10,240, reflecting a 1.16% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Beaverhead County is the 22nd largest county in Montana. The 2010 population was 9,257 and has grown 10.62% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.2 years
Female: 43.9 years
Male: 42.5 years
There are 8,014 adults, (2,314 of whom are seniors) in Beaverhead County.
Female: 4,734 (48.7%)
Male: 4,979 (51.3%)
The racial composition of Beaverhead County includes 91.32% White, and smaller percentages for Native American, other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 8,870 | 91.32% |
| Two or more races | 572 | 5.89% |
| Native American | 129 | 1.33% |
| Other race | 59 | 0.61% |
| Black or African American | 52 | 0.54% |
| Asian | 29 | 0.3% |
| Native Hawaiian or Pacific Islander | 2 | 0.02% |
Beaverhead County 's average per capita income is $41,837. Household income levels show a median of $61,268. The poverty rate stands at 11.43%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,629 | - |
| Families | $81,125 | $100,691 |
| Households | $61,268 | $79,753 |
| Non Families | $42,368 | $54,802 |
Average Income
Median Household Income
Poverty Rate
