Marion County's estimated 2025 population is 28,582 with a growth rate of 0.13% in the past year according to the most recent United States census data. Marion County is the 33rd largest county in South Carolina. The 2010 population was 32,951 and has seen a growth of -13.26% since that time.
Data after 2023 is projected based on recent change
The racial composition of Marion County includes 55.79% Black or African American, 38.47% White, and smaller percentages for Two or more races, other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Black or African American
White
Two or more races
Other race
Native American
Asian
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| Black or African American | 16,123 | 55.79% |
| White | 11,117 | 38.47% |
| Two or more races | 826 | 2.86% |
| Other race | 661 | 2.29% |
| Native American | 98 | 0.34% |
| Asian | 45 | 0.16% |
| Native Hawaiian or Pacific Islander | 30 | 0.1% |
Married
Widowed
Divorced
Separated
Never Married
Marion County's average per capita income is $33,440. Household income levels show a median of $34,501. The poverty rate stands at 27.32%.
Name | Median | Mean |
|---|---|---|
| Married Families | $67,607 | - |
| Families | $47,288 | $62,929 |
| Households | $34,501 | $51,626 |
| Non Families | $21,567 | $34,732 |
Average Income
Median Household Income
Poverty Rate