Fallon County's 2026 population is estimated at 2,840, reflecting a -1.83% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fallon County is the 42nd largest county in Montana. The 2010 population was 2,889 and has grown -1.7% since 2010.
Data after 2023 is projected based on recent change
Overall: 37.5 years
Female: 42.2 years
Male: 35.3 years
There are 2,107 adults, (614 of whom are seniors) in Fallon County.
Female: 1,335 (48.4%)
Male: 1,425 (51.6%)
The racial composition of Fallon County includes 92.21% White, and smaller percentages for Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 2,545 | 92.21% |
| Two or more races | 153 | 5.54% |
| Native American | 62 | 2.25% |
Fallon County 's average per capita income is $56,953. Household income levels show a median of $76,250. The poverty rate stands at 11.41%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $101,917 | - |
| Families | $100,917 | $142,154 |
| Households | $76,250 | $111,823 |
| Non Families | $41,172 | $54,802 |
Average Income
Median Household Income
Poverty Rate
