Sweet Grass County's estimated 2025 population is 3,835 with a growth rate of 0.95% in the past year according to the most recent United States census data. Sweet Grass County is the 39th largest county in Montana. The 2010 population was 3,617 and has seen a growth of 6.03% since that time.
Data after 2023 is projected based on recent change
The racial composition of Sweet Grass County includes 90.57% White, and smaller percentages for other race, Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Other race
Native American
Black or African American
Asian
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,363 | 90.57% |
| Two or more races | 171 | 4.61% |
| Other race | 68 | 1.83% |
| Native American | 61 | 1.64% |
| Black or African American | 50 | 1.35% |
| Asian | 0 | 0% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Sweet Grass County's average per capita income is $44,327. Household income levels show a median of $69,426. The poverty rate stands at 7.82%.
Name | Median | Mean |
|---|---|---|
| Married Families | $89,583 | - |
| Families | $88,287 | $118,760 |
| Households | $69,426 | $94,999 |
| Non Families | $33,333 | $49,946 |
Average Income
Median Household Income
Poverty Rate