| | Rainbow City, AL | Milton, GA | United States |
| Population | 10,093 | 40,487 | 329,725,481 |
| Female Population | 56.0% | 49.8% | 50.5% |
| Male Population | 44.1% | 50.2% | 49.5% |
| Median Age | 36.8 | 40.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 9,610 | 33,018 | 309,327,143 |
| Population - 2000 | 8,428 | 17,863 | 285,036,114 |
| Population - 1990 | 7,673 | 5,975 | 251,960,433 |
| Pop. 2000 to Now | 13.9% | 124.1% | 15.6% |
| Pop. 1990 to Now | 25.2% | 570.1% | 30.8% |
| space4 | | | |
| Population Density | 394.9 | 1,050.6 | 93.4 |
| Land Area | 25.6 | 38.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Rainbow City, AL | Milton, GA | United States |
| Age 0 to 4 | 4.5% | 6.5% | 5.9% |
| Age 5 to 9 | 7.2% | 6.6% | 6.1% |
| Age 10 to 14 | 9.6% | 8.5% | 6.6% |
| Age 15 to 17 | 3.1% | 6.0% | 3.9% |
| Age 18 to 20 | 2.5% | 2.6% | 4.0% |
| Age 21 to 24 | 3.8% | 2.0% | 5.2% |
| Age 25 to 34 | 16.4% | 10.0% | 13.8% |
| Age 35 to 44 | 8.7% | 15.0% | 12.9% |
| Age 45 to 54 | 17.1% | 19.3% | 12.6% |
| Age 55 to 59 | 4.7% | 9.8% | 6.7% |
| Age 60 to 64 | 5.6% | 4.9% | 6.3% |
| Age 65 to 74 | 8.5% | 6.8% | 9.6% |
| Age 75 to 84 | 7.0% | 1.6% | 4.5% |
| Age 85 and over | 1.2% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Rainbow City, AL | Milton, GA | United States |
| White | 78.1% | 61.9% | 59.4% |
| Black | 11.3% | 11.5% | 12.2% |
| Asian | 2.4% | 17.4% | 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 | 2.3% | 3.5% | 3.2% |
| Hispanic | 5.9% | 5.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Rainbow City, AL | Milton, GA | United States |
| Married Population | 44.7% | 67.7% | 49.8% |
| Currently Married | 43.9% | 67.5% | 48.0% |
| Married but Separated | 0.8% | 0.2% | 1.8% |
| Single Population | 55.3% | 32.3% | 50.2% |
| Never Married | 30.3% | 24.3% | 33.8% |
| Divorced | 16.8% | 5.8% | 10.8% |
| Widowed | 8.3% | 2.2% | 5.6% |
| space5 | | | |
| Household Size | 2.65 | 2.72 | 2.60 |
| Households | 3,798 | 14,867 | 124,010,992 |
| Family Households | 2,464 | 11,122 | 80,755,759 |
| Married couple, w/children | 23.4% | 53.7% | 30.5% |
| Married couple, no children | 44.0% | 38.7% | 42.9% |
| Non Family Households | 1,334 | 3,745 | 43,255,233 |
| Single householder, w/children | 25.3% | 4.7% | 15.8% |
| Single householder, no children | 7.3% | 3.0% | 10.8% |