| | Silverhill, AL | Summerdale, AL | United States |
| Population | 704 | 1,512 | 329,725,481 |
| Female Population | 57.1% | 53.4% | 50.5% |
| Male Population | 42.9% | 46.6% | 49.5% |
| Median Age | 45.1 | 44.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 715 | 895 | 309,327,143 |
| Population - 2000 | 616 | 655 | 285,036,114 |
| Population - 1990 | 556 | 559 | 251,960,433 |
| Pop. 2000 to Now | 108.6% | 173.6% | 15.6% |
| Pop. 1990 to Now | 131.1% | 220.6% | 30.8% |
| space4 | | | |
| Population Density | 560.5 | 150.6 | 93.4 |
| Land Area | 1.3 | 10.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Silverhill, AL | Summerdale, AL | United States |
| Age 0 to 4 | 5.7% | 7.2% | 5.9% |
| Age 5 to 9 | 3.1% | 2.2% | 6.1% |
| Age 10 to 14 | 7.4% | 5.0% | 6.6% |
| Age 15 to 17 | 3.7% | 5.4% | 3.9% |
| Age 18 to 20 | 4.0% | 3.3% | 4.0% |
| Age 21 to 24 | 7.5% | 7.8% | 5.2% |
| Age 25 to 34 | 12.8% | 9.4% | 13.8% |
| Age 35 to 44 | 5.5% | 10.6% | 12.9% |
| Age 45 to 54 | 17.0% | 13.0% | 12.6% |
| Age 55 to 59 | 3.0% | 5.5% | 6.7% |
| Age 60 to 64 | 6.5% | 6.2% | 6.3% |
| Age 65 to 74 | 11.8% | 17.0% | 9.6% |
| Age 75 to 84 | 10.2% | 5.5% | 4.5% |
| Age 85 and over | 1.7% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Silverhill, AL | Summerdale, AL | United States |
| White | 81.5% | 90.9% | 59.4% |
| Black | 0.3% | 2.1% | 12.2% |
| Asian | 0.0% | 0.3% | 5.6% |
| Native American | 1.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.7% | 3.8% | 3.2% |
| Hispanic | 13.2% | 2.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Silverhill, AL | Summerdale, AL | United States |
| Married Population | 53.9% | 55.8% | 49.8% |
| Currently Married | 53.6% | 55.5% | 48.0% |
| Married but Separated | 0.3% | 0.2% | 1.8% |
| Single Population | 46.1% | 44.2% | 50.2% |
| Never Married | 23.4% | 25.6% | 33.8% |
| Divorced | 12.0% | 14.4% | 10.8% |
| Widowed | 10.7% | 4.3% | 5.6% |
| space5 | | | |
| Household Size | 2.27 | 2.70 | 2.60 |
| Households | 308 | 534 | 124,010,992 |
| Family Households | 189 | 388 | 80,755,759 |
| Married couple, w/children | 32.3% | 21.9% | 30.5% |
| Married couple, no children | 43.4% | 60.8% | 42.9% |
| Non Family Households | 119 | 146 | 43,255,233 |
| Single householder, w/children | 19.6% | 10.3% | 15.8% |
| Single householder, no children | 4.8% | 7.0% | 10.8% |