| | Upper Southampton, PA | Little River, SC | United States |
| Population | 15,249 | 9,929 | 329,725,481 |
| Female Population | 50.3% | 52.4% | 50.5% |
| Male Population | 49.7% | 47.6% | 49.5% |
| Median Age | 50.3 | 60.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 15,144 | 8,675 | 309,327,143 |
| Population - 2000 | 15,764 | 7,027 | 285,036,114 |
| Population - 1990 | 16,076 | 3,470 | 251,960,433 |
| Pop. 2000 to Now | -5.5% | 54.8% | 15.6% |
| Pop. 1990 to Now | -7.4% | 213.5% | 30.8% |
| space4 | | | |
| Population Density | 2,303.5 | 947.5 | 93.4 |
| Land Area | 6.6 | 10.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Upper Southampton, PA | Little River, SC | United States |
| Age 0 to 4 | 4.0% | 4.8% | 5.9% |
| Age 5 to 9 | 3.8% | 3.1% | 6.1% |
| Age 10 to 14 | 5.0% | 3.0% | 6.6% |
| Age 15 to 17 | 2.9% | 2.2% | 3.9% |
| Age 18 to 20 | 2.6% | 1.5% | 4.0% |
| Age 21 to 24 | 6.8% | 1.8% | 5.2% |
| Age 25 to 34 | 8.1% | 9.8% | 13.8% |
| Age 35 to 44 | 9.7% | 6.5% | 12.9% |
| Age 45 to 54 | 14.5% | 12.2% | 12.6% |
| Age 55 to 59 | 8.8% | 4.6% | 6.7% |
| Age 60 to 64 | 7.4% | 13.5% | 6.3% |
| Age 65 to 74 | 15.1% | 25.7% | 9.6% |
| Age 75 to 84 | 6.6% | 9.5% | 4.5% |
| Age 85 and over | 4.7% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Upper Southampton, PA | Little River, SC | United States |
| White | 93.6% | 89.3% | 59.4% |
| Black | 0.5% | 3.2% | 12.2% |
| Asian | 2.6% | 2.1% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.0% | 0.4% |
| Two or More Races | 0.4% | 3.3% | 3.2% |
| Hispanic | 2.6% | 1.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Upper Southampton, PA | Little River, SC | United States |
| Married Population | 61.6% | 52.8% | 49.8% |
| Currently Married | 59.8% | 49.5% | 48.0% |
| Married but Separated | 1.8% | 3.2% | 1.8% |
| Single Population | 38.4% | 47.2% | 50.2% |
| Never Married | 22.3% | 23.2% | 33.8% |
| Divorced | 7.0% | 16.3% | 10.8% |
| Widowed | 9.1% | 7.8% | 5.6% |
| space5 | | | |
| Household Size | 2.43 | 2.09 | 2.60 |
| Households | 6,211 | 4,736 | 124,010,992 |
| Family Households | 4,192 | 2,629 | 80,755,759 |
| Married couple, w/children | 27.5% | 11.8% | 30.5% |
| Married couple, no children | 61.5% | 68.8% | 42.9% |
| Non Family Households | 2,019 | 2,107 | 43,255,233 |
| Single householder, w/children | 6.0% | 11.8% | 15.8% |
| Single householder, no children | 5.1% | 7.6% | 10.8% |