Custer County's estimated 2025 population is 11,955 with a growth rate of -0.13% in the past year according to the most recent United States census data. Custer County is the 18th largest county in Montana. The 2010 population was 11,691 and has seen a growth of 2.26% since that time.
Data after 2023 is projected based on recent change
The racial composition of Custer County includes 91.22% White, and smaller percentages for Native American, other race, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Native American
Other race
Asian
Black or African American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 10,890 | 91.22% |
| Two or more races | 714 | 5.98% |
| Native American | 153 | 1.28% |
| Other race | 79 | 0.66% |
| Asian | 48 | 0.4% |
| Black or African American | 42 | 0.35% |
| Native Hawaiian or Pacific Islander | 12 | 0.1% |
Married
Widowed
Divorced
Separated
Never Married
Custer County's average per capita income is $41,553. Household income levels show a median of $63,585. The poverty rate stands at 11.67%.
Name | Median | Mean |
|---|---|---|
| Married Families | $95,075 | - |
| Families | $90,000 | $105,272 |
| Households | $63,585 | $83,970 |
| Non Families | $33,883 | $48,054 |
Average Income
Median Household Income
Poverty Rate