Sanders County's 2026 population is estimated at 14,233, reflecting a 1.2% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Sanders County is the 13th largest county in Montana. The 2010 population was 11,395 and has grown 24.91% since 2010.
Data after 2023 is projected based on recent change
Overall: 54.6 years
Female: 54.6 years
Male: 54.6 years
There are 11,020 adults, (4,384 of whom are seniors) in Sanders County.
Female: 6,508 (49%)
Male: 6,777 (51%)
The racial composition of Sanders County includes 89.17% White, and smaller percentages for Native American, Asian, other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 11,846 | 89.17% |
| Two or more races | 905 | 6.81% |
| Native American | 384 | 2.89% |
| Asian | 60 | 0.45% |
| Other race | 42 | 0.32% |
| Black or African American | 33 | 0.25% |
| Native Hawaiian or Pacific Islander | 15 | 0.11% |
Sanders County 's average per capita income is $33,840. Household income levels show a median of $57,476. The poverty rate stands at 15.45%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $69,781 | - |
| Families | $67,344 | $85,402 |
| Households | $57,476 | $75,317 |
| Non Families | $33,395 | $55,580 |
Average Income
Median Household Income
Poverty Rate