Hill County's 2026 population is estimated at 15,833, reflecting a -0.73% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Hill County is the 12th largest county in Montana. The 2010 population was 16,151 and has grown -1.97% since 2010.
Data after 2023 is projected based on recent change
Overall: 34.5 years
Female: 35.2 years
Male: 33.7 years
There are 11,592 adults, (2,632 of whom are seniors) in Hill County.
Female: 7,874 (48.7%)
Male: 8,281 (51.3%)
The racial composition of Hill County includes 67.9% White, 22.75% 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 | 10,970 | 67.9% |
| Native American | 3,675 | 22.75% |
| Two or more races | 1,238 | 7.66% |
| Other race | 197 | 1.22% |
| Black or African American | 41 | 0.25% |
| Asian | 27 | 0.17% |
| Native Hawaiian or Pacific Islander | 7 | 0.04% |
Hill County 's average per capita income is $41,113. Household income levels show a median of $52,798. The poverty rate stands at 20.7%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $89,406 | - |
| Families | $77,538 | $93,324 |
| Households | $52,798 | $75,118 |
| Non Families | $36,845 | $44,485 |
Average Income
Median Household Income
Poverty Rate
