Marlboro County's estimated 2025 population is 25,100 with a growth rate of -1.19% in the past year according to the most recent United States census data. Marlboro County is the 36th largest county in South Carolina. The 2010 population was 28,918 and has seen a growth of -13.2% since that time.
Data after 2023 is projected based on recent change
The racial composition of Marlboro County includes 49.29% Black or African American, 38.73% White, 3.46% Native American, and smaller percentages for other race, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Black or African American
White
Two or more races
Native American
Other race
Asian
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| Black or African American | 12,956 | 49.29% |
| White | 10,180 | 38.73% |
| Two or more races | 1,625 | 6.18% |
| Native American | 909 | 3.46% |
| Other race | 516 | 1.96% |
| Asian | 99 | 0.38% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Marlboro County's average per capita income is $35,655. Household income levels show a median of $36,293. The poverty rate stands at 26.16%.
Name | Median | Mean |
|---|---|---|
| Married Families | $57,037 | - |
| Families | $50,795 | $65,653 |
| Households | $36,293 | $50,984 |
| Non Families | $20,659 | $32,571 |
Average Income
Median Household Income
Poverty Rate