| | Olanta, SC | Eutawville, SC | United States |
| Population | 509 | 419 | 329,725,481 |
| Female Population | 64.4% | 48.5% | 50.5% |
| Male Population | 35.6% | 51.6% | 49.5% |
| Median Age | 43.8 | 45.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 561 | 311 | 309,327,143 |
| Population - 2000 | 613 | 344 | 285,036,114 |
| Population - 1990 | 687 | 350 | 251,960,433 |
| Pop. 2000 to Now | -10.1% | -17.4% | 15.6% |
| Pop. 1990 to Now | -19.8% | -18.9% | 30.8% |
| space4 | | | |
| Population Density | 511.6 | 440.1 | 93.4 |
| Land Area | 1.0 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Olanta, SC | Eutawville, SC | United States |
| Age 0 to 4 | 2.6% | 4.3% | 5.9% |
| Age 5 to 9 | 4.7% | 6.9% | 6.1% |
| Age 10 to 14 | 4.9% | 7.2% | 6.6% |
| Age 15 to 17 | 8.4% | 1.2% | 3.9% |
| Age 18 to 20 | 7.9% | 6.4% | 4.0% |
| Age 21 to 24 | 3.3% | 1.2% | 5.2% |
| Age 25 to 34 | 5.1% | 14.3% | 13.8% |
| Age 35 to 44 | 14.3% | 1.4% | 12.9% |
| Age 45 to 54 | 7.7% | 18.1% | 12.6% |
| Age 55 to 59 | 8.8% | 15.0% | 6.7% |
| Age 60 to 64 | 11.2% | 4.3% | 6.3% |
| Age 65 to 74 | 5.3% | 15.0% | 9.6% |
| Age 75 to 84 | 12.4% | 4.5% | 4.5% |
| Age 85 and over | 3.3% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Olanta, SC | Eutawville, SC | United States |
| White | 64.4% | 59.0% | 59.4% |
| Black | 30.3% | 38.2% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 5.3% | 2.4% | 3.2% |
| Hispanic | 0.0% | 0.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Olanta, SC | Eutawville, SC | United States |
| Married Population | 38.7% | 36.3% | 49.8% |
| Currently Married | 34.9% | 33.3% | 48.0% |
| Married but Separated | 3.8% | 2.9% | 1.8% |
| Single Population | 61.3% | 63.7% | 50.2% |
| Never Married | 36.7% | 48.5% | 33.8% |
| Divorced | 16.1% | 6.7% | 10.8% |
| Widowed | 8.5% | 8.5% | 5.6% |
| space5 | | | |
| Household Size | 2.52 | 2.87 | 2.60 |
| Households | 202 | 146 | 124,010,992 |
| Family Households | 125 | 87 | 80,755,759 |
| Married couple, w/children | 12.8% | 9.2% | 30.5% |
| Married couple, no children | 49.6% | 46.0% | 42.9% |
| Non Family Households | 77 | 59 | 43,255,233 |
| Single householder, w/children | 31.2% | 23.0% | 15.8% |
| Single householder, no children | 6.4% | 21.8% | 10.8% |