| | Sheffield, AL | Scottsboro, AL | United States |
| Population | 9,305 | 15,446 | 329,725,481 |
| Female Population | 51.6% | 51.8% | 50.5% |
| Male Population | 48.4% | 48.2% | 49.5% |
| Median Age | 43.3 | 42.6 | 38.4 |
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| Population - 2010 | 9,031 | 14,764 | 309,327,143 |
| Population - 2000 | 9,652 | 14,762 | 285,036,114 |
| Population - 1990 | 10,380 | 13,786 | 251,960,433 |
| Pop. 2000 to Now | -8.4% | -2.6% | 15.6% |
| Pop. 1990 to Now | -14.9% | 4.3% | 30.8% |
| space4 | | | |
| Population Density | 1,432.4 | 304.9 | 93.4 |
| Land Area | 6.5 | 50.7 | 3,531,905.4 |
| Water Area | 0.1 | 6.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Sheffield, AL | Scottsboro, AL | United States |
| Age 0 to 4 | 3.4% | 5.1% | 5.9% |
| Age 5 to 9 | 7.7% | 5.2% | 6.1% |
| Age 10 to 14 | 5.2% | 6.9% | 6.6% |
| Age 15 to 17 | 2.0% | 3.5% | 3.9% |
| Age 18 to 20 | 4.6% | 3.3% | 4.0% |
| Age 21 to 24 | 5.8% | 4.2% | 5.2% |
| Age 25 to 34 | 12.3% | 13.6% | 13.8% |
| Age 35 to 44 | 10.9% | 10.7% | 12.9% |
| Age 45 to 54 | 12.5% | 12.2% | 12.6% |
| Age 55 to 59 | 7.2% | 7.0% | 6.7% |
| Age 60 to 64 | 6.3% | 6.6% | 6.3% |
| Age 65 to 74 | 13.8% | 12.3% | 9.6% |
| Age 75 to 84 | 6.2% | 7.6% | 4.5% |
| Age 85 and over | 2.3% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Sheffield, AL | Scottsboro, AL | United States |
| White | 67.4% | 90.6% | 59.4% |
| Black | 27.8% | 3.8% | 12.2% |
| Asian | 0.1% | 0.6% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.4% | 0.0% | 0.2% |
| Other | 0.8% | 0.5% | 0.4% |
| Two or More Races | 2.3% | 1.4% | 3.2% |
| Hispanic | 1.3% | 3.1% | 18.4% |
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| Marriage & Family | | | |
| | Sheffield, AL | Scottsboro, AL | United States |
| Married Population | 39.0% | 45.5% | 49.8% |
| Currently Married | 33.2% | 42.6% | 48.0% |
| Married but Separated | 5.8% | 2.9% | 1.8% |
| Single Population | 61.0% | 54.5% | 50.2% |
| Never Married | 32.3% | 27.7% | 33.8% |
| Divorced | 17.8% | 17.7% | 10.8% |
| Widowed | 11.0% | 9.1% | 5.6% |
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| Household Size | 2.20 | 2.41 | 2.60 |
| Households | 4,202 | 6,241 | 124,010,992 |
| Family Households | 2,138 | 3,977 | 80,755,759 |
| Married couple, w/children | 10.0% | 21.9% | 30.5% |
| Married couple, no children | 46.4% | 41.8% | 42.9% |
| Non Family Households | 2,064 | 2,264 | 43,255,233 |
| Single householder, w/children | 29.0% | 21.8% | 15.8% |
| Single householder, no children | 14.6% | 14.5% | 10.8% |