| Name | Barnwell County |
| State | South Carolina |
| FIPS Code | 45011 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 22,523 |
| Population Growth Rate(2000-2022) | -8.98% |
| Majority Ethnicity | White 51.1% |
| Public School Majority Ethnicity | African American 54% |
| Partisan Voting Index | Republican:+3 |
| Unemployment Rate | 5.7% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 51.1% |
| African American | 46% |
| Hispanic | 2.39% |
| Asian | 0.15% |
| Native American | 0.32% |
| Hawaiin/Pacific Islander | 0.04% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 38.32% |
| African American | 54.07% |
| Hispanic | 3% |
| Asian | 1.23% |
| Native American | 0.16% |
| Hawaiin/Pacific Islander | 0.19% |