Sweet Grass County's estimated 2026 population is 3,773 with a growth rate of 0.21% 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 4.31% 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 and multiracial populations.
White (90.57%)
Two or more races (4.61%)
Other race (1.83%)
Native American (1.64%)
Black or African American (1.35%)
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% |
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