Madison County's estimated 2026 population is 55,396 with a growth rate of 0.41% in the past year according to the most recent United States census data. Madison County is the 7th largest county in Idaho. The 2010 population was 37,588 and has seen a growth of 47.38% since that time.
Data after 2023 is projected based on recent change
Overall: 21.4 years
Female: 20.4 years
Male: 22.5 years
There are 43,564 adults, (2,945 of whom are seniors) in Madison County.
Female: 29,894 (54.7%)
Male: 24,724 (45.3%)
The racial composition of Madison County includes 87.1% White, 3.68% other race, and smaller percentages for Asian, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 47,573 | 87.1% |
| Two or more races | 3,373 | 6.18% |
| Other race | 2,010 | 3.68% |
| Asian | 816 | 1.49% |
| Black or African American | 555 | 1.02% |
| Native Hawaiian or Pacific Islander | 157 | 0.29% |
| Native American | 134 | 0.25% |
Madison County's average per capita income is $39,752. Household income levels show a median of $60,160. The poverty rate stands at 24.48%.
Name | Median | Mean |
|---|---|---|
| Married Families | $70,011 | - |
| Families | $65,935 | $101,526 |
| Households | $60,160 | $90,919 |
| Non Families | $48,270 | $51,981 |
Average Income
Median Household Income
Poverty Rate
