Madison County's estimated 2026 population is 17,485 with a growth rate of 0.94% in the past year according to the most recent United States census data. Madison County is the 41st largest county in Iowa. The 2010 population was 15,738 and has seen a growth of 11.1% since that time.
Data after 2023 is projected based on recent change
The racial composition of Madison County includes 95.65% White, and smaller percentages for Two or more races, Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (95.65%)
Two or more races (2.24%)
Black or African American (1.26%)
Asian (0.35%)
Other race (0.28%)
Native American (0.17%)
Native Hawaiian or Pacific Islander (0.05%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 16,031 | 95.65% |
| Two or more races | 376 | 2.24% |
| Black or African American | 211 | 1.26% |
| Asian | 58 | 0.35% |
| Other race | 47 | 0.28% |
| Native American | 28 | 0.17% |
| Native Hawaiian or Pacific Islander | 9 | 0.05% |
Married
Widowed
Divorced
Separated
Never Married
Madison County's average per capita income is $54,689. Household income levels show a median of $89,542. The poverty rate stands at 6.8%.
Name | Median | Mean |
|---|---|---|
| Married Families | $118,172 | - |
| Families | $111,892 | $124,613 |
| Households | $89,542 | $103,385 |
| Non Families | $45,188 | $58,045 |
Average Income
Median Household Income
Poverty Rate
