Cascade County's 2026 population is estimated at 85,390, reflecting a 0.42% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Cascade County is the 5th largest county in Montana. The 2010 population was 81,513 and has grown 4.76% since 2010.
Overall: 38.6 years
Female: 40.6 years
Male: 37.1 years
There are 65,744 adults, (16,614 of whom are seniors) in Cascade County.
Female: 41,485 (49%)
Male: 43,121 (51%)
The racial composition of Cascade County includes 83.69% White, 3.37% Native American, and smaller percentages for other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 70,806 | 83.69% |
| Two or more races | 7,249 | 8.57% |
| Native American | 2,852 | 3.37% |
| Other race | 1,662 | 1.96% |
| Black or African American | 1,108 | 1.31% |
| Asian | 924 | 1.09% |
| Native Hawaiian or Pacific Islander | 5 | 0.01% |
Cascade County 's average per capita income is $45,977. Household income levels show a median of $67,690. The poverty rate stands at 13.06%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $99,489 | $121,282 |
| Families | $88,572 | $107,723 |
| Households | $67,690 | $89,832 |
| Non Families | $42,323 | $60,784 |
Average Income
Median Household Income
Poverty Rate