| | Summerdale, AL | Waynesboro, MS | United States |
| Population | 1,512 | 4,599 | 329,725,481 |
| Female Population | 53.4% | 53.4% | 50.5% |
| Male Population | 46.6% | 46.6% | 49.5% |
| Median Age | 44.4 | 36.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 895 | 5,056 | 309,327,143 |
| Population - 2000 | 655 | 5,197 | 285,036,114 |
| Population - 1990 | 559 | 5,143 | 251,960,433 |
| Pop. 2000 to Now | 173.6% | -6.4% | 15.6% |
| Pop. 1990 to Now | 220.6% | -5.4% | 30.8% |
| space4 | | | |
| Population Density | 150.6 | 362.3 | 93.4 |
| Land Area | 10.0 | 12.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Summerdale, AL | Waynesboro, MS | United States |
| Age 0 to 4 | 7.2% | 5.7% | 5.9% |
| Age 5 to 9 | 2.2% | 5.5% | 6.1% |
| Age 10 to 14 | 5.0% | 12.7% | 6.6% |
| Age 15 to 17 | 5.4% | 4.5% | 3.9% |
| Age 18 to 20 | 3.3% | 0.0% | 4.0% |
| Age 21 to 24 | 7.8% | 5.7% | 5.2% |
| Age 25 to 34 | 9.4% | 13.9% | 13.8% |
| Age 35 to 44 | 10.6% | 11.9% | 12.9% |
| Age 45 to 54 | 13.0% | 10.9% | 12.6% |
| Age 55 to 59 | 5.5% | 5.5% | 6.7% |
| Age 60 to 64 | 6.2% | 3.8% | 6.3% |
| Age 65 to 74 | 17.0% | 15.5% | 9.6% |
| Age 75 to 84 | 5.5% | 4.2% | 4.5% |
| Age 85 and over | 1.9% | 0.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Summerdale, AL | Waynesboro, MS | United States |
| White | 90.9% | 32.2% | 59.4% |
| Black | 2.1% | 62.6% | 12.2% |
| Asian | 0.3% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.8% | 0.2% | 3.2% |
| Hispanic | 2.9% | 5.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Summerdale, AL | Waynesboro, MS | United States |
| Married Population | 55.8% | 38.2% | 49.8% |
| Currently Married | 55.5% | 26.2% | 48.0% |
| Married but Separated | 0.2% | 12.0% | 1.8% |
| Single Population | 44.2% | 61.8% | 50.2% |
| Never Married | 25.6% | 45.0% | 33.8% |
| Divorced | 14.4% | 8.4% | 10.8% |
| Widowed | 4.3% | 8.3% | 5.6% |
| space5 | | | |
| Household Size | 2.70 | 2.40 | 2.60 |
| Households | 534 | 1,870 | 124,010,992 |
| Family Households | 388 | 1,287 | 80,755,759 |
| Married couple, w/children | 21.9% | 14.5% | 30.5% |
| Married couple, no children | 60.8% | 20.2% | 42.9% |
| Non Family Households | 146 | 583 | 43,255,233 |
| Single householder, w/children | 10.3% | 39.5% | 15.8% |
| Single householder, no children | 7.0% | 25.8% | 10.8% |