| | San Felipe, TX | Sealy, TX | United States |
| Population | 1,143 | 6,766 | 329,725,481 |
| Female Population | 46.6% | 55.5% | 50.5% |
| Male Population | 53.4% | 44.5% | 49.5% |
| Median Age | 33.2 | 41.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 744 | 6,110 | 309,327,143 |
| Population - 2000 | 868 | 5,248 | 285,036,114 |
| Population - 1990 | 618 | 4,541 | 251,960,433 |
| Pop. 2000 to Now | -4.3% | 22.8% | 15.6% |
| Pop. 1990 to Now | 34.5% | 41.9% | 30.8% |
| space4 | | | |
| Population Density | 136.7 | 507.8 | 93.4 |
| Land Area | 8.4 | 13.3 | 3,531,905.4 |
| Water Area | 0.3 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | San Felipe, TX | Sealy, TX | United States |
| Age 0 to 4 | 11.3% | 5.8% | 5.9% |
| Age 5 to 9 | 5.2% | 7.3% | 6.1% |
| Age 10 to 14 | 16.4% | 5.3% | 6.6% |
| Age 15 to 17 | 2.0% | 3.3% | 3.9% |
| Age 18 to 20 | 2.7% | 6.0% | 4.0% |
| Age 21 to 24 | 3.1% | 2.9% | 5.2% |
| Age 25 to 34 | 13.5% | 12.3% | 13.8% |
| Age 35 to 44 | 4.7% | 11.9% | 12.9% |
| Age 45 to 54 | 17.0% | 10.6% | 12.6% |
| Age 55 to 59 | 9.5% | 5.3% | 6.7% |
| Age 60 to 64 | 3.0% | 8.5% | 6.3% |
| Age 65 to 74 | 6.9% | 10.9% | 9.6% |
| Age 75 to 84 | 3.4% | 7.2% | 4.5% |
| Age 85 and over | 1.4% | 2.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | San Felipe, TX | Sealy, TX | United States |
| White | 42.3% | 53.2% | 59.4% |
| Black | 35.8% | 6.9% | 12.2% |
| Asian | 0.0% | 0.0% | 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 | 0.5% | 2.3% | 3.2% |
| Hispanic | 21.4% | 37.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | San Felipe, TX | Sealy, TX | United States |
| Married Population | 47.8% | 58.0% | 49.8% |
| Currently Married | 44.7% | 53.9% | 48.0% |
| Married but Separated | 3.1% | 4.1% | 1.8% |
| Single Population | 52.2% | 42.0% | 50.2% |
| Never Married | 26.3% | 24.9% | 33.8% |
| Divorced | 6.3% | 8.9% | 10.8% |
| Widowed | 19.7% | 8.3% | 5.6% |
| space5 | | | |
| Household Size | 2.59 | 2.40 | 2.60 |
| Households | 442 | 2,795 | 124,010,992 |
| Family Households | 324 | 2,038 | 80,755,759 |
| Married couple, w/children | 33.0% | 24.0% | 30.5% |
| Married couple, no children | 18.8% | 50.2% | 42.9% |
| Non Family Households | 118 | 757 | 43,255,233 |
| Single householder, w/children | 32.7% | 15.4% | 15.8% |
| Single householder, no children | 15.4% | 10.4% | 10.8% |