| | Walterboro, SC | Branchville, NJ | United States |
| Population | 5,514 | 839 | 329,725,481 |
| Female Population | 63.7% | 43.2% | 50.5% |
| Male Population | 36.3% | 56.9% | 49.5% |
| Median Age | 36.5 | 45.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,762 | 836 | 309,327,143 |
| Population - 2000 | 5,153 | 845 | 285,036,114 |
| Population - 1990 | 5,492 | 851 | 251,960,433 |
| Pop. 2000 to Now | 3.7% | -8.3% | 15.6% |
| Pop. 1990 to Now | -2.7% | -8.9% | 30.8% |
| space4 | | | |
| Population Density | 805.7 | 1,417.2 | 93.4 |
| Land Area | 6.8 | 0.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Walterboro, SC | Branchville, NJ | United States |
| Age 0 to 4 | 4.0% | 4.6% | 5.9% |
| Age 5 to 9 | 11.2% | 3.8% | 6.1% |
| Age 10 to 14 | 5.8% | 5.7% | 6.6% |
| Age 15 to 17 | 3.7% | 1.4% | 3.9% |
| Age 18 to 20 | 1.9% | 3.1% | 4.0% |
| Age 21 to 24 | 7.5% | 10.7% | 5.2% |
| Age 25 to 34 | 13.4% | 3.1% | 13.8% |
| Age 35 to 44 | 10.8% | 16.2% | 12.9% |
| Age 45 to 54 | 12.4% | 15.5% | 12.6% |
| Age 55 to 59 | 6.9% | 6.6% | 6.7% |
| Age 60 to 64 | 5.9% | 9.8% | 6.3% |
| Age 65 to 74 | 10.7% | 13.5% | 9.6% |
| Age 75 to 84 | 3.5% | 2.0% | 4.5% |
| Age 85 and over | 2.2% | 3.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Walterboro, SC | Branchville, NJ | United States |
| White | 39.7% | 94.5% | 59.4% |
| Black | 52.4% | 2.4% | 12.2% |
| Asian | 2.9% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.6% | 0.6% | 3.2% |
| Hispanic | 4.4% | 2.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Walterboro, SC | Branchville, NJ | United States |
| Married Population | 39.5% | 63.2% | 49.8% |
| Currently Married | 34.1% | 62.4% | 48.0% |
| Married but Separated | 5.4% | 0.8% | 1.8% |
| Single Population | 60.5% | 36.8% | 50.2% |
| Never Married | 41.7% | 29.2% | 33.8% |
| Divorced | 13.3% | 5.7% | 10.8% |
| Widowed | 5.5% | 1.9% | 5.6% |
| space5 | | | |
| Household Size | 2.38 | 2.54 | 2.60 |
| Households | 2,268 | 323 | 124,010,992 |
| Family Households | 1,495 | 243 | 80,755,759 |
| Married couple, w/children | 14.8% | 30.5% | 30.5% |
| Married couple, no children | 30.2% | 59.7% | 42.9% |
| Non Family Households | 773 | 80 | 43,255,233 |
| Single householder, w/children | 43.7% | 5.4% | 15.8% |
| Single householder, no children | 11.2% | 4.5% | 10.8% |