Madison is located in Johnson County, Iowa. Madison has a 2025 population of 4,001. Madison is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Madison is $181,729 with a poverty rate of 4.22%.The median age in Madison is 34.6 years: 31.2 years for males, and 36 years for females.
Data after 2023 is projected based on recent change
The racial composition of Madison includes 85.95% White, 4.4% Black or African American, 4.15% Asian, and smaller percentages for other race and multiracial populations.
White (86.0%)
Black or African American (4.4%)
Asian (4.2%)
Two or more races (4.0%)
Other race (1.5%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,439 | 85.95% |
| Black or African American | 176 | 4.4% |
| Asian | 166 | 4.15% |
| Two or more races | 159 | 3.97% |
| Other race | 61 | 1.52% |
Married
Widowed
Divorced
Separated
Never Married
Madison's average per capita income is $65,875. Household income levels show a median of $115,260. The poverty rate stands at 4.22%.
Name | Median | Mean |
|---|---|---|
| Married Families | $143,750 | - |
| Families | $127,500 | $227,162 |
| Households | $115,260 | $181,729 |
| Non Families | $64,871 | $93,959 |
Average Income
Median Household Income
Poverty Rate