Marne is a city located in Cass County, Iowa. Marne has a 2025 population of 112. Marne is currently growing at a rate of 0.9% annually and its population has increased by 2.75% since the most recent census, which recorded a population of 109 in 2020.
The average household income in Marne is $53,706 with a poverty rate of 23.48%. The median age in Marne is 45.1 years: 45.1 years for males, and 47.2 years for females.
Data after 2023 is projected based on recent change
The racial composition of Marne includes 98.48% White, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.
White
Two or more races
Black or African American
Native American
Asian
Native Hawaiian or Pacific Islander
Other race
Race | Population | Percentage (of total) |
|---|---|---|
| White | 130 | 98.48% |
| Two or more races | 2 | 1.52% |
| Black or African American | 0 | 0% |
| Native American | 0 | 0% |
| Asian | 0 | 0% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
| Other race | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Marne's average per capita income is $41,818. Household income levels show a median of $52,917. The poverty rate stands at 23.48%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,750 | - |
| Families | $66,250 | $73,464 |
| Households | $52,917 | $53,706 |
| Non Families | - | $16,848 |
Average Income
Median Household Income
Poverty Rate