Madison County's 2026 population is estimated at 10,241, reflecting a 2.44% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Madison County is the 21st largest county in Montana. The 2010 population was 7,696 and has grown 33.07% since 2010.
Data after 2023 is projected based on recent change
Overall: 52.2 years
Female: 53.2 years
Male: 51.5 years
There are 7,719 adults, (2,839 of whom are seniors) in Madison County.
Female: 4,367 (47.3%)
Male: 4,856 (52.7%)
The racial composition of Madison County includes 91.88% White, and smaller percentages for other race, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 8,474 | 91.88% |
| Two or more races | 430 | 4.66% |
| Other race | 193 | 2.09% |
| Native American | 84 | 0.91% |
| Asian | 42 | 0.46% |
Madison County 's average per capita income is $44,733. Household income levels show a median of $75,250. The poverty rate stands at 6.17%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,037 | - |
| Families | $89,231 | $115,830 |
| Households | $75,250 | $98,856 |
| Non Families | $46,778 | $60,269 |
Average Income
Median Household Income
Poverty Rate