| | St. Gabriel, LA | Convent, LA | United States |
| Population | 7,046 | 487 | 329,725,481 |
| Female Population | 38.1% | 44.2% | 50.5% |
| Male Population | 61.9% | 55.9% | 49.5% |
| Median Age | 34.8 | 25.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 6,676 | 467 | 309,327,143 |
| Population - 2000 | 5,514 | 623 | 285,036,114 |
| Population - 1990 | 3,908 | 618 | 251,960,433 |
| Pop. 2000 to Now | 36.4% | -28.7% | 15.6% |
| Pop. 1990 to Now | 92.5% | -28.2% | 30.8% |
| space4 | | | |
| Population Density | 237.5 | 125.3 | 93.4 |
| Land Area | 29.7 | 3.9 | 3,531,905.4 |
| Water Area | 0.2 | 1.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | St. Gabriel, LA | Convent, LA | United States |
| Age 0 to 4 | 5.6% | 16.4% | 5.9% |
| Age 5 to 9 | 2.0% | 3.7% | 6.1% |
| Age 10 to 14 | 1.7% | 13.6% | 6.6% |
| Age 15 to 17 | 2.3% | 4.7% | 3.9% |
| Age 18 to 20 | 4.9% | 2.7% | 4.0% |
| Age 21 to 24 | 6.7% | 8.4% | 5.2% |
| Age 25 to 34 | 27.1% | 18.3% | 13.8% |
| Age 35 to 44 | 16.6% | 11.5% | 12.9% |
| Age 45 to 54 | 13.8% | 9.2% | 12.6% |
| Age 55 to 59 | 7.6% | 1.2% | 6.7% |
| Age 60 to 64 | 4.2% | 4.1% | 6.3% |
| Age 65 to 74 | 6.2% | 2.5% | 9.6% |
| Age 75 to 84 | 1.1% | 3.7% | 4.5% |
| Age 85 and over | 0.1% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | St. Gabriel, LA | Convent, LA | United States |
| White | 33.5% | 30.6% | 59.4% |
| Black | 59.8% | 69.4% | 12.2% |
| Asian | 0.1% | 0.0% | 5.6% |
| Native American | 0.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 1.0% | 0.0% | 3.2% |
| Hispanic | 5.2% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | St. Gabriel, LA | Convent, LA | United States |
| Married Population | 25.1% | 50.5% | 49.8% |
| Currently Married | 20.9% | 42.7% | 48.0% |
| Married but Separated | 4.2% | 7.7% | 1.8% |
| Single Population | 74.9% | 49.5% | 50.2% |
| Never Married | 54.9% | 30.7% | 33.8% |
| Divorced | 15.7% | 10.8% | 10.8% |
| Widowed | 4.3% | 8.1% | 5.6% |
| space5 | | | |
| Household Size | 2.44 | 2.82 | 2.60 |
| Households | 1,654 | 150 | 124,010,992 |
| Family Households | 1,315 | 109 | 80,755,759 |
| Married couple, w/children | 10.3% | 33.0% | 30.5% |
| Married couple, no children | 20.8% | 28.4% | 42.9% |
| Non Family Households | 339 | 41 | 43,255,233 |
| Single householder, w/children | 35.5% | 38.5% | 15.8% |
| Single householder, no children | 33.5% | 0.0% | 10.8% |