Marmarth is a city located in Slope County, North Dakota. Marmarth has a 2025 population of 92 . Marmarth is currently declining at a rate of -2.13% annually and its population has decreased by -8% since the most recent census, which recorded a population of 100 in 2020.
The average household income in Marmarth is $77,122 with a poverty rate of 5.68%. The median age in Marmarth is 57.8 years: 59.5 years for males, and 49.9 years for females. For every 100 females there are 144.4 males.
Data after 2023 is projected based on recent change
The racial composition of Marmarth includes 85.23% White, 4.55% other race, and smaller percentages for and multiracial populations.
White (85.23%)
Two or more races (10.23%)
Other race (4.55%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 75 | 85.23% |
| Two or more races | 9 | 10.23% |
| Other race | 4 | 4.55% |
Married
Widowed
Divorced
Separated
Never Married
Marmarth's average per capita income is $54,286. Household income levels show a median of $65,000. The poverty rate stands at 5.68%.
Name | Median | Mean |
|---|---|---|
| Households | $65,000 | $77,122 |
| Families | - | $106,148 |
| Married Families | - | - |
| Non Families | - | $48,100 |
Average Income
Median Household Income
Poverty Rate