| | Rockwood, TN | Des Arc, AR | United States |
| Population | 5,492 | 1,341 | 329,725,481 |
| Female Population | 53.0% | 49.3% | 50.5% |
| Male Population | 47.0% | 50.7% | 49.5% |
| Median Age | 45.7 | 48.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,563 | 1,716 | 309,327,143 |
| Population - 2000 | 5,774 | 1,933 | 285,036,114 |
| Population - 1990 | 5,348 | 2,001 | 251,960,433 |
| Pop. 2000 to Now | -5.5% | -18.9% | 15.6% |
| Pop. 1990 to Now | 2.1% | -21.7% | 30.8% |
| space4 | | | |
| Population Density | 686.1 | 638.0 | 93.4 |
| Land Area | 8.0 | 2.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Rockwood, TN | Des Arc, AR | United States |
| Age 0 to 4 | 7.9% | 4.8% | 5.9% |
| Age 5 to 9 | 4.6% | 1.8% | 6.1% |
| Age 10 to 14 | 3.0% | 6.0% | 6.6% |
| Age 15 to 17 | 6.9% | 6.5% | 3.9% |
| Age 18 to 20 | 2.3% | 2.1% | 4.0% |
| Age 21 to 24 | 4.2% | 6.3% | 5.2% |
| Age 25 to 34 | 9.0% | 12.8% | 13.8% |
| Age 35 to 44 | 9.1% | 6.9% | 12.9% |
| Age 45 to 54 | 19.5% | 14.8% | 12.6% |
| Age 55 to 59 | 6.7% | 8.1% | 6.7% |
| Age 60 to 64 | 5.9% | 4.2% | 6.3% |
| Age 65 to 74 | 7.0% | 10.5% | 9.6% |
| Age 75 to 84 | 9.6% | 12.6% | 4.5% |
| Age 85 and over | 4.3% | 2.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Rockwood, TN | Des Arc, AR | United States |
| White | 92.0% | 77.8% | 59.4% |
| Black | 0.3% | 15.7% | 12.2% |
| Asian | 1.2% | 0.0% | 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% | 5.3% | 3.2% |
| Hispanic | 1.5% | 1.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Rockwood, TN | Des Arc, AR | United States |
| Married Population | 43.9% | 38.8% | 49.8% |
| Currently Married | 41.2% | 36.6% | 48.0% |
| Married but Separated | 2.7% | 2.2% | 1.8% |
| Single Population | 56.1% | 61.2% | 50.2% |
| Never Married | 23.9% | 28.4% | 33.8% |
| Divorced | 16.1% | 19.9% | 10.8% |
| Widowed | 16.1% | 13.0% | 5.6% |
| space5 | | | |
| Household Size | 2.38 | 2.33 | 2.60 |
| Households | 2,218 | 544 | 124,010,992 |
| Family Households | 1,260 | 273 | 80,755,759 |
| Married couple, w/children | 35.2% | 22.0% | 30.5% |
| Married couple, no children | 35.0% | 43.6% | 42.9% |
| Non Family Households | 958 | 271 | 43,255,233 |
| Single householder, w/children | 18.7% | 16.1% | 15.8% |
| Single householder, no children | 11.2% | 18.3% | 10.8% |