Union County's estimated 2026 population is 26,532 with a growth rate of -0.27% in the past year according to the most recent United States census data. Union County is the 35th largest county in South Carolina. The 2010 population was 28,914 and has seen a growth of -8.24% since that time.
Data after 2023 is projected based on recent change
The racial composition of Union County includes 65.16% White, 29.21% Black or African American, and smaller percentages for other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
White (65.16%)
Black or African American (29.21%)
Two or more races (4.82%)
Other race (0.34%)
Native American (0.25%)
Asian (0.2%)
Native Hawaiian or Pacific Islander (0.01%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 17,586 | 65.16% |
| Black or African American | 7,883 | 29.21% |
| Two or more races | 1,302 | 4.82% |
| Other race | 93 | 0.34% |
| Native American | 68 | 0.25% |
| Asian | 54 | 0.2% |
| Native Hawaiian or Pacific Islander | 4 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Union County's average per capita income is $37,020. Household income levels show a median of $41,200. The poverty rate stands at 22.71%.
Name | Median | Mean |
|---|---|---|
| Married Families | $73,573 | - |
| Families | $58,513 | $70,316 |
| Households | $41,200 | $58,786 |
| Non Families | $24,323 | $37,542 |
Average Income
Median Household Income
Poverty Rate