Carter County's 2026 population is estimated at 1,397, reflecting a -0.07% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Carter County is the 50th largest county in Montana. The 2010 population was 1,159 and has grown 20.53% since 2010.
Data after 2023 is projected based on recent change
Overall: 56.9 years
Female: 56.6 years
Male: 58.3 years
There are 1,077 adults, (407 of whom are seniors) in Carter County.
Female: 648 (49.5%)
Male: 660 (50.5%)
The racial composition of Carter County includes 89.22% White, and smaller percentages for other race, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,167 | 89.22% |
| Two or more races | 126 | 9.63% |
| Other race | 11 | 0.84% |
| Black or African American | 2 | 0.15% |
| Native American | 2 | 0.15% |
Carter County 's average per capita income is $34,375. Household income levels show a median of $54,167. The poverty rate stands at 15.4%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $73,600 | - |
| Families | $73,400 | $83,577 |
| Households | $54,167 | $67,789 |
| Non Families | $30,172 | $38,525 |
Average Income
Median Household Income
Poverty Rate
