| | Stewartsville, NJ | Hockessin, DE | United States |
| Population | 503 | 13,464 | 329,725,481 |
| Female Population | 64.6% | 52.7% | 50.5% |
| Male Population | 35.4% | 47.3% | 49.5% |
| Median Age | 39.9 | 45.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 389 | 12,919 | 309,327,143 |
| Population - 2000 | 213 | 12,902 | 285,036,114 |
| Population - 1990 | 135 | 10,051 | 251,960,433 |
| Pop. 2000 to Now | 47.9% | 7.4% | 15.6% |
| Pop. 1990 to Now | 133.3% | 37.9% | 30.8% |
| space4 | | | |
| Population Density | 3,899.2 | 1,340.9 | 93.4 |
| Land Area | 0.1 | 10.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Stewartsville, NJ | Hockessin, DE | United States |
| Age 0 to 4 | 3.6% | 6.3% | 5.9% |
| Age 5 to 9 | 7.6% | 6.3% | 6.1% |
| Age 10 to 14 | 11.7% | 7.0% | 6.6% |
| Age 15 to 17 | 1.4% | 4.0% | 3.9% |
| Age 18 to 20 | 0.0% | 2.7% | 4.0% |
| Age 21 to 24 | 4.4% | 2.3% | 5.2% |
| Age 25 to 34 | 18.5% | 7.5% | 13.8% |
| Age 35 to 44 | 5.8% | 13.0% | 12.9% |
| Age 45 to 54 | 12.3% | 14.8% | 12.6% |
| Age 55 to 59 | 17.7% | 6.8% | 6.7% |
| Age 60 to 64 | 4.8% | 7.1% | 6.3% |
| Age 65 to 74 | 9.1% | 14.0% | 9.6% |
| Age 75 to 84 | 1.6% | 5.3% | 4.5% |
| Age 85 and over | 1.6% | 2.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Stewartsville, NJ | Hockessin, DE | United States |
| White | 89.9% | 82.3% | 59.4% |
| Black | 0.0% | 2.7% | 12.2% |
| Asian | 0.0% | 9.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.6% | 0.4% |
| Two or More Races | 6.6% | 3.7% | 3.2% |
| Hispanic | 3.6% | 1.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Stewartsville, NJ | Hockessin, DE | United States |
| Married Population | 46.1% | 68.0% | 49.8% |
| Currently Married | 46.1% | 67.6% | 48.0% |
| Married but Separated | 0.0% | 0.4% | 1.8% |
| Single Population | 53.9% | 32.0% | 50.2% |
| Never Married | 31.4% | 21.1% | 33.8% |
| Divorced | 14.4% | 5.2% | 10.8% |
| Widowed | 8.0% | 5.7% | 5.6% |
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| Household Size | 2.53 | 2.75 | 2.60 |
| Households | 199 | 4,782 | 124,010,992 |
| Family Households | 161 | 4,101 | 80,755,759 |
| Married couple, w/children | 14.9% | 38.0% | 30.5% |
| Married couple, no children | 43.5% | 51.2% | 42.9% |
| Non Family Households | 38 | 681 | 43,255,233 |
| Single householder, w/children | 29.8% | 5.9% | 15.8% |
| Single householder, no children | 11.8% | 4.9% | 10.8% |