Martensdale is a city located in Warren County, Iowa. Martensdale has a 2025 population of 410 . Martensdale is currently declining at a rate of -0.73% annually and its population has decreased by -2.84% since the most recent census, which recorded a population of 422 in 2020.
The average household income in Martensdale is $64,745 with a poverty rate of 11.39%. The median age in Martensdale is 29 years: 26.3 years for males, and 39.1 years for females. For every 100 females there are 92.8 males.
Data after 2023 is projected based on recent change
The racial composition of Martensdale includes 92.52% White, and smaller percentages for Black or African American, Native American and multiracial populations.
White (92.52%)
Two or more races (6.29%)
Black or African American (1.02%)
Native American (0.17%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 544 | 92.52% |
| Two or more races | 37 | 6.29% |
| Black or African American | 6 | 1.02% |
| Native American | 1 | 0.17% |
Married
Widowed
Divorced
Separated
Never Married
Martensdale's average per capita income is $51,389. Household income levels show a median of $53,750. The poverty rate stands at 11.39%.
Name | Median | Mean |
|---|---|---|
| Married Families | $87,083 | - |
| Families | $65,000 | $74,455 |
| Households | $53,750 | $64,745 |
| Non Families | $38,125 | $45,663 |
Average Income
Median Household Income
Poverty Rate