| | Lesslie, SC | Hummelstown, PA | United States |
| Population | 3,534 | 4,522 | 329,725,481 |
| Female Population | 53.1% | 51.5% | 50.5% |
| Male Population | 46.9% | 48.5% | 49.5% |
| Median Age | 31.9 | 38.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,050 | 4,529 | 309,327,143 |
| Population - 2000 | 2,268 | 4,360 | 285,036,114 |
| Population - 1990 | 1,934 | 3,981 | 251,960,433 |
| Pop. 2000 to Now | 37.5% | 10.4% | 15.6% |
| Pop. 1990 to Now | 61.3% | 20.9% | 30.8% |
| space4 | | | |
| Population Density | 582.9 | 3,640.9 | 93.4 |
| Land Area | 6.1 | 1.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lesslie, SC | Hummelstown, PA | United States |
| Age 0 to 4 | 7.3% | 4.7% | 5.9% |
| Age 5 to 9 | 12.7% | 7.8% | 6.1% |
| Age 10 to 14 | 6.3% | 4.5% | 6.6% |
| Age 15 to 17 | 4.9% | 5.3% | 3.9% |
| Age 18 to 20 | 5.7% | 2.8% | 4.0% |
| Age 21 to 24 | 2.3% | 5.3% | 5.2% |
| Age 25 to 34 | 15.4% | 15.5% | 13.8% |
| Age 35 to 44 | 11.1% | 13.6% | 12.9% |
| Age 45 to 54 | 16.3% | 12.3% | 12.6% |
| Age 55 to 59 | 5.1% | 7.4% | 6.7% |
| Age 60 to 64 | 5.0% | 6.8% | 6.3% |
| Age 65 to 74 | 5.2% | 8.4% | 9.6% |
| Age 75 to 84 | 2.4% | 4.5% | 4.5% |
| Age 85 and over | 0.3% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lesslie, SC | Hummelstown, PA | United States |
| White | 78.5% | 84.3% | 59.4% |
| Black | 16.8% | 0.0% | 12.2% |
| Asian | 0.0% | 1.6% | 5.6% |
| Native American | 1.9% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.1% | 4.9% | 3.2% |
| Hispanic | 1.7% | 9.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lesslie, SC | Hummelstown, PA | United States |
| Married Population | 43.8% | 49.3% | 49.8% |
| Currently Married | 43.8% | 46.1% | 48.0% |
| Married but Separated | 0.0% | 3.2% | 1.8% |
| Single Population | 56.2% | 50.7% | 50.2% |
| Never Married | 35.0% | 33.6% | 33.8% |
| Divorced | 14.7% | 11.5% | 10.8% |
| Widowed | 6.5% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 3.04 | 2.07 | 2.60 |
| Households | 1,163 | 2,182 | 124,010,992 |
| Family Households | 923 | 1,069 | 80,755,759 |
| Married couple, w/children | 28.8% | 32.7% | 30.5% |
| Married couple, no children | 26.9% | 45.2% | 42.9% |
| Non Family Households | 240 | 1,113 | 43,255,233 |
| Single householder, w/children | 25.0% | 16.4% | 15.8% |
| Single householder, no children | 19.3% | 5.7% | 10.8% |