| | San Antonio, FL | Port Orange, FL | United States |
| Population | 1,235 | 62,197 | 329,725,481 |
| Female Population | 50.4% | 50.6% | 50.5% |
| Male Population | 49.6% | 49.4% | 49.5% |
| Median Age | 42.7 | 46 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,150 | 56,622 | 309,327,143 |
| Population - 2000 | 655 | 45,823 | 285,036,114 |
| Population - 1990 | 776 | 35,317 | 251,960,433 |
| Pop. 2000 to Now | 129.9% | 42.8% | 15.6% |
| Pop. 1990 to Now | 94.1% | 85.3% | 30.8% |
| space4 | | | |
| Population Density | 914.8 | 2,325.7 | 93.4 |
| Land Area | 1.4 | 26.7 | 3,531,905.4 |
| Water Area | 0.0 | 2.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | San Antonio, FL | Port Orange, FL | United States |
| Age 0 to 4 | 5.6% | 3.7% | 5.9% |
| Age 5 to 9 | 6.2% | 5.0% | 6.1% |
| Age 10 to 14 | 5.5% | 5.1% | 6.6% |
| Age 15 to 17 | 5.6% | 3.4% | 3.9% |
| Age 18 to 20 | 2.1% | 3.2% | 4.0% |
| Age 21 to 24 | 4.2% | 5.8% | 5.2% |
| Age 25 to 34 | 13.8% | 11.6% | 13.8% |
| Age 35 to 44 | 10.4% | 10.2% | 12.9% |
| Age 45 to 54 | 20.6% | 12.7% | 12.6% |
| Age 55 to 59 | 6.6% | 7.1% | 6.7% |
| Age 60 to 64 | 4.7% | 7.5% | 6.3% |
| Age 65 to 74 | 7.7% | 15.0% | 9.6% |
| Age 75 to 84 | 6.7% | 6.9% | 4.5% |
| Age 85 and over | 0.3% | 2.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | San Antonio, FL | Port Orange, FL | United States |
| White | 85.7% | 83.6% | 59.4% |
| Black | 3.4% | 4.7% | 12.2% |
| Asian | 0.3% | 2.7% | 5.6% |
| Native American | 1.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 0.2% | 2.1% | 3.2% |
| Hispanic | 9.3% | 6.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | San Antonio, FL | Port Orange, FL | United States |
| Married Population | 56.8% | 49.2% | 49.8% |
| Currently Married | 56.5% | 48.4% | 48.0% |
| Married but Separated | 0.3% | 0.7% | 1.8% |
| Single Population | 43.2% | 50.8% | 50.2% |
| Never Married | 27.9% | 28.4% | 33.8% |
| Divorced | 7.9% | 14.7% | 10.8% |
| Widowed | 7.4% | 7.7% | 5.6% |
| space5 | | | |
| Household Size | 2.55 | 2.31 | 2.60 |
| Households | 484 | 26,896 | 124,010,992 |
| Family Households | 380 | 16,081 | 80,755,759 |
| Married couple, w/children | 29.7% | 23.6% | 30.5% |
| Married couple, no children | 43.2% | 52.3% | 42.9% |
| Non Family Households | 104 | 10,815 | 43,255,233 |
| Single householder, w/children | 13.7% | 13.3% | 15.8% |
| Single householder, no children | 13.4% | 10.8% | 10.8% |