| | Gray, GA | Monroe, GA | United States |
| Population | 3,372 | 14,675 | 329,725,481 |
| Female Population | 53.7% | 56.3% | 50.5% |
| Male Population | 46.3% | 43.7% | 49.5% |
| Median Age | 33.9 | 32.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,251 | 12,907 | 309,327,143 |
| Population - 2000 | 1,811 | 11,407 | 285,036,114 |
| Population - 1990 | 2,189 | 9,759 | 251,960,433 |
| Pop. 2000 to Now | 79.0% | 22.6% | 15.6% |
| Pop. 1990 to Now | 48.1% | 43.2% | 30.8% |
| space4 | | | |
| Population Density | 853.9 | 936.0 | 93.4 |
| Land Area | 3.9 | 15.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gray, GA | Monroe, GA | United States |
| Age 0 to 4 | 2.0% | 8.6% | 5.9% |
| Age 5 to 9 | 7.0% | 7.3% | 6.1% |
| Age 10 to 14 | 9.8% | 9.0% | 6.6% |
| Age 15 to 17 | 3.4% | 4.8% | 3.9% |
| Age 18 to 20 | 8.7% | 4.9% | 4.0% |
| Age 21 to 24 | 2.8% | 6.6% | 5.2% |
| Age 25 to 34 | 16.9% | 13.2% | 13.8% |
| Age 35 to 44 | 14.4% | 13.0% | 12.9% |
| Age 45 to 54 | 9.9% | 11.9% | 12.6% |
| Age 55 to 59 | 4.1% | 3.5% | 6.7% |
| Age 60 to 64 | 3.9% | 4.7% | 6.3% |
| Age 65 to 74 | 12.4% | 7.9% | 9.6% |
| Age 75 to 84 | 3.4% | 2.7% | 4.5% |
| Age 85 and over | 1.2% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gray, GA | Monroe, GA | United States |
| White | 67.3% | 36.1% | 59.4% |
| Black | 30.6% | 53.6% | 12.2% |
| Asian | 1.1% | 1.2% | 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 | 0.8% | 3.0% | 3.2% |
| Hispanic | 0.3% | 6.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gray, GA | Monroe, GA | United States |
| Married Population | 44.4% | 29.7% | 49.8% |
| Currently Married | 43.3% | 25.5% | 48.0% |
| Married but Separated | 1.0% | 4.2% | 1.8% |
| Single Population | 55.6% | 70.3% | 50.2% |
| Never Married | 27.2% | 47.2% | 33.8% |
| Divorced | 18.0% | 15.5% | 10.8% |
| Widowed | 10.4% | 7.6% | 5.6% |
| space5 | | | |
| Household Size | 2.56 | 2.88 | 2.60 |
| Households | 1,249 | 4,880 | 124,010,992 |
| Family Households | 685 | 3,163 | 80,755,759 |
| Married couple, w/children | 38.2% | 13.9% | 30.5% |
| Married couple, no children | 30.5% | 18.5% | 42.9% |
| Non Family Households | 564 | 1,717 | 43,255,233 |
| Single householder, w/children | 27.6% | 51.7% | 15.8% |
| Single householder, no children | 3.7% | 15.9% | 10.8% |