Fergus County's 2026 population is estimated at 11,954, reflecting a 0.39% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fergus County is the 17th largest county in Montana. The 2010 population was 11,585 and has grown 3.19% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.4 years
Female: 45.1 years
Male: 43.9 years
There are 9,231 adults, (2,931 of whom are seniors) in Fergus County.
Female: 5,697 (48.7%)
Male: 5,990 (51.3%)
The racial composition of Fergus County includes 92.99% White, and smaller percentages for Two or more races, Native American, other race, Asian, Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 10,868 | 92.99% |
| Two or more races | 326 | 2.79% |
| Native American | 263 | 2.25% |
| Other race | 88 | 0.75% |
| Asian | 76 | 0.65% |
| Black or African American | 66 | 0.56% |
Fergus County 's average per capita income is $38,477. Household income levels show a median of $63,706. The poverty rate stands at 15.13%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $91,021 | - |
| Families | $84,380 | $95,044 |
| Households | $63,706 | $77,592 |
| Non Families | $36,083 | $43,907 |
Average Income
Median Household Income
Poverty Rate
