| | St. Francisville, LA | Pine Grove, CA | United States |
| Population | 1,950 | 2,864 | 329,725,481 |
| Female Population | 46.3% | 57.3% | 50.5% |
| Male Population | 53.7% | 42.7% | 49.5% |
| Median Age | 37.9 | 57.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,755 | 2,373 | 309,327,143 |
| Population - 2000 | 1,712 | 2,202 | 285,036,114 |
| Population - 1990 | 1,700 | 1,942 | 251,960,433 |
| Pop. 2000 to Now | -7.2% | 5.0% | 15.6% |
| Pop. 1990 to Now | -6.5% | 19.1% | 30.8% |
| space4 | | | |
| Population Density | 1,071.4 | 411.1 | 93.4 |
| Land Area | 1.8 | 7.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | St. Francisville, LA | Pine Grove, CA | United States |
| Age 0 to 4 | 10.8% | 3.5% | 5.9% |
| Age 5 to 9 | 4.6% | 3.7% | 6.1% |
| Age 10 to 14 | 7.7% | 2.7% | 6.6% |
| Age 15 to 17 | 5.2% | 1.7% | 3.9% |
| Age 18 to 20 | 1.8% | 0.9% | 4.0% |
| Age 21 to 24 | 7.4% | 0.0% | 5.2% |
| Age 25 to 34 | 6.8% | 9.6% | 13.8% |
| Age 35 to 44 | 20.1% | 11.3% | 12.9% |
| Age 45 to 54 | 15.6% | 12.1% | 12.6% |
| Age 55 to 59 | 3.6% | 9.3% | 6.7% |
| Age 60 to 64 | 1.2% | 10.9% | 6.3% |
| Age 65 to 74 | 4.5% | 25.7% | 9.6% |
| Age 75 to 84 | 9.4% | 6.9% | 4.5% |
| Age 85 and over | 1.3% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | St. Francisville, LA | Pine Grove, CA | United States |
| White | 60.8% | 86.2% | 59.4% |
| Black | 36.3% | 0.0% | 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 | 2.2% | 2.5% | 3.2% |
| Hispanic | 0.7% | 11.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | St. Francisville, LA | Pine Grove, CA | United States |
| Married Population | 39.6% | 61.6% | 49.8% |
| Currently Married | 36.3% | 59.4% | 48.0% |
| Married but Separated | 3.3% | 2.2% | 1.8% |
| Single Population | 60.4% | 38.4% | 50.2% |
| Never Married | 40.8% | 12.5% | 33.8% |
| Divorced | 10.8% | 21.2% | 10.8% |
| Widowed | 8.8% | 4.7% | 5.6% |
| space5 | | | |
| Household Size | 2.98 | 2.31 | 2.60 |
| Households | 646 | 1,239 | 124,010,992 |
| Family Households | 379 | 833 | 80,755,759 |
| Married couple, w/children | 25.6% | 26.4% | 30.5% |
| Married couple, no children | 22.4% | 59.4% | 42.9% |
| Non Family Households | 267 | 406 | 43,255,233 |
| Single householder, w/children | 30.3% | 0.0% | 15.8% |
| Single householder, no children | 21.6% | 14.2% | 10.8% |