Blaine County's estimated 2026 population is 6,941 with a growth rate of 0.27% in the past year according to the most recent United States census data. Blaine County is the 31st largest county in Montana. The 2010 population was 6,503 and has seen a growth of 6.74% since that time.
Data after 2023 is projected based on recent change
The racial composition of Blaine County includes 50.15% Native American, 44.33% White, and smaller percentages for Black or African American and multiracial populations.
Native American (50.15%)
White (44.33%)
Two or more races (5.07%)
Black or African American (0.44%)
Race | Population | Percentage (of total) |
|---|---|---|
| Native American | 3,509 | 50.15% |
| White | 3,102 | 44.33% |
| Two or more races | 355 | 5.07% |
| Black or African American | 31 | 0.44% |
Married
Widowed
Divorced
Separated
Never Married
Blaine County's average per capita income is $43,697. Household income levels show a median of $65,050. The poverty rate stands at 20.24%.
Name | Median | Mean |
|---|---|---|
| Married Families | $84,970 | - |
| Families | $79,676 | $95,118 |
| Households | $65,050 | $78,155 |
| Non Families | $22,052 | $36,673 |
Average Income
Median Household Income
Poverty Rate
