Dillon County's 2026 population is estimated at 27,307, reflecting a -0.49% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dillon County is the 34th largest county in South Carolina. The 2010 population was 32,080 and has grown -14.88% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.2 years
Female: 41.2 years
Male: 36.2 years
There are 20,814 adults, (5,010 of whom are seniors) in Dillon County.
Female: 14,706 (52.8%)
Male: 13,156 (47.2%)
The racial composition of Dillon County includes 45.26% Black or African American, 44.65% White, and smaller percentages for other race, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Black or African American | 12,609 | 45.26% |
| White | 12,439 | 44.65% |
| Two or more races | 1,413 | 5.07% |
| Other race | 773 | 2.77% |
| Native American | 619 | 2.22% |
| Asian | 9 | 0.03% |
Dillon County 's average per capita income is $37,275. Household income levels show a median of $46,605. The poverty rate stands at 27.66%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $75,198 | - |
| Families | $52,117 | $69,713 |
| Households | $46,605 | $60,876 |
| Non Families | $30,146 | $39,615 |
Average Income
Median Household Income
Poverty Rate