| | South Miami, FL | Coral Gables, FL | United States |
| Population | 11,997 | 49,269 | 329,725,481 |
| Female Population | 51.6% | 53.8% | 50.5% |
| Male Population | 48.4% | 46.2% | 49.5% |
| Median Age | 39.2 | 39.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 11,716 | 46,961 | 309,327,143 |
| Population - 2000 | 10,741 | 42,249 | 285,036,114 |
| Population - 1990 | 10,404 | 40,091 | 251,960,433 |
| Pop. 2000 to Now | 9.9% | 16.3% | 15.6% |
| Pop. 1990 to Now | 13.5% | 22.6% | 30.8% |
| space4 | | | |
| Population Density | 5,292.0 | 3,811.3 | 93.4 |
| Land Area | 2.3 | 12.9 | 3,531,905.4 |
| Water Area | 0.0 | 24.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | South Miami, FL | Coral Gables, FL | United States |
| Age 0 to 4 | 5.3% | 5.7% | 5.9% |
| Age 5 to 9 | 4.9% | 6.0% | 6.1% |
| Age 10 to 14 | 5.7% | 4.0% | 6.6% |
| Age 15 to 17 | 2.5% | 3.5% | 3.9% |
| Age 18 to 20 | 3.2% | 9.5% | 4.0% |
| Age 21 to 24 | 8.5% | 6.1% | 5.2% |
| Age 25 to 34 | 16.0% | 10.0% | 13.8% |
| Age 35 to 44 | 11.3% | 11.0% | 12.9% |
| Age 45 to 54 | 12.6% | 12.9% | 12.6% |
| Age 55 to 59 | 7.0% | 6.9% | 6.7% |
| Age 60 to 64 | 6.9% | 5.0% | 6.3% |
| Age 65 to 74 | 11.6% | 10.3% | 9.6% |
| Age 75 to 84 | 2.5% | 5.6% | 4.5% |
| Age 85 and over | 1.9% | 3.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | South Miami, FL | Coral Gables, FL | United States |
| White | 22.9% | 34.1% | 59.4% |
| Black | 11.0% | 3.4% | 12.2% |
| Asian | 3.9% | 3.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.5% | 0.4% |
| Two or More Races | 5.1% | 1.8% | 3.2% |
| Hispanic | 57.1% | 57.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | South Miami, FL | Coral Gables, FL | United States |
| Married Population | 46.0% | 48.8% | 49.8% |
| Currently Married | 44.5% | 47.8% | 48.0% |
| Married but Separated | 1.5% | 1.0% | 1.8% |
| Single Population | 54.0% | 51.2% | 50.2% |
| Never Married | 36.4% | 36.1% | 33.8% |
| Divorced | 12.7% | 8.9% | 10.8% |
| Widowed | 4.8% | 6.3% | 5.6% |
| space5 | | | |
| Household Size | 2.55 | 2.38 | 2.60 |
| Households | 4,652 | 18,719 | 124,010,992 |
| Family Households | 2,684 | 11,524 | 80,755,759 |
| Married couple, w/children | 27.9% | 31.1% | 30.5% |
| Married couple, no children | 45.7% | 50.2% | 42.9% |
| Non Family Households | 1,968 | 7,195 | 43,255,233 |
| Single householder, w/children | 16.0% | 10.3% | 15.8% |
| Single householder, no children | 10.4% | 8.4% | 10.8% |