| | Grayson, GA | Dallas, GA | United States |
| Population | 4,478 | 13,704 | 329,725,481 |
| Female Population | 57.1% | 57.2% | 50.5% |
| Male Population | 42.9% | 42.8% | 49.5% |
| Median Age | 31.3 | 32.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,557 | 11,577 | 309,327,143 |
| Population - 2000 | 765 | 5,056 | 285,036,114 |
| Population - 1990 | 529 | 2,810 | 251,960,433 |
| Pop. 2000 to Now | 479.0% | 184.6% | 15.6% |
| Pop. 1990 to Now | 737.2% | 412.0% | 30.8% |
| space4 | | | |
| Population Density | 1,815.9 | 1,856.7 | 93.4 |
| Land Area | 2.5 | 7.4 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Grayson, GA | Dallas, GA | United States |
| Age 0 to 4 | 14.6% | 12.1% | 5.9% |
| Age 5 to 9 | 2.1% | 3.2% | 6.1% |
| Age 10 to 14 | 11.5% | 7.1% | 6.6% |
| Age 15 to 17 | 4.0% | 6.1% | 3.9% |
| Age 18 to 20 | 5.4% | 4.3% | 4.0% |
| Age 21 to 24 | 2.7% | 7.3% | 5.2% |
| Age 25 to 34 | 13.4% | 13.6% | 13.8% |
| Age 35 to 44 | 5.0% | 13.7% | 12.9% |
| Age 45 to 54 | 18.1% | 15.9% | 12.6% |
| Age 55 to 59 | 7.7% | 3.1% | 6.7% |
| Age 60 to 64 | 3.7% | 3.9% | 6.3% |
| Age 65 to 74 | 8.0% | 4.6% | 9.6% |
| Age 75 to 84 | 2.1% | 3.2% | 4.5% |
| Age 85 and over | 1.7% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Grayson, GA | Dallas, GA | United States |
| White | 22.0% | 50.8% | 59.4% |
| Black | 70.7% | 29.5% | 12.2% |
| Asian | 2.6% | 1.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.5% | 0.4% |
| Two or More Races | 0.5% | 6.2% | 3.2% |
| Hispanic | 4.2% | 10.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Grayson, GA | Dallas, GA | United States |
| Married Population | 67.7% | 43.7% | 49.8% |
| Currently Married | 67.3% | 43.1% | 48.0% |
| Married but Separated | 0.4% | 0.6% | 1.8% |
| Single Population | 32.3% | 56.3% | 50.2% |
| Never Married | 22.1% | 32.1% | 33.8% |
| Divorced | 7.0% | 18.7% | 10.8% |
| Widowed | 3.3% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 3.86 | 2.57 | 2.60 |
| Households | 1,160 | 5,269 | 124,010,992 |
| Family Households | 1,006 | 3,507 | 80,755,759 |
| Married couple, w/children | 47.7% | 40.5% | 30.5% |
| Married couple, no children | 35.2% | 20.7% | 42.9% |
| Non Family Households | 154 | 1,762 | 43,255,233 |
| Single householder, w/children | 13.6% | 33.2% | 15.8% |
| Single householder, no children | 3.5% | 5.6% | 10.8% |