| | Luling, LA | Harvey, LA | United States |
| Population | 14,115 | 20,942 | 329,725,481 |
| Female Population | 51.6% | 50.3% | 50.5% |
| Male Population | 48.5% | 49.7% | 49.5% |
| Median Age | 37.2 | 37.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 12,828 | 19,918 | 309,327,143 |
| Population - 2000 | 11,512 | 22,226 | 285,036,114 |
| Population - 1990 | 2,803 | 21,222 | 251,960,433 |
| Pop. 2000 to Now | 14.6% | -9.3% | 15.6% |
| Pop. 1990 to Now | 370.5% | -5.0% | 30.8% |
| space4 | | | |
| Population Density | 606.0 | 3,228.3 | 93.4 |
| Land Area | 23.3 | 6.5 | 3,531,905.4 |
| Water Area | 1.2 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Luling, LA | Harvey, LA | United States |
| Age 0 to 4 | 6.3% | 6.9% | 5.9% |
| Age 5 to 9 | 7.0% | 6.4% | 6.1% |
| Age 10 to 14 | 11.4% | 7.4% | 6.6% |
| Age 15 to 17 | 4.1% | 4.9% | 3.9% |
| Age 18 to 20 | 1.9% | 2.5% | 4.0% |
| Age 21 to 24 | 3.8% | 4.4% | 5.2% |
| Age 25 to 34 | 11.9% | 14.2% | 13.8% |
| Age 35 to 44 | 16.4% | 12.9% | 12.9% |
| Age 45 to 54 | 14.0% | 14.0% | 12.6% |
| Age 55 to 59 | 5.1% | 6.2% | 6.7% |
| Age 60 to 64 | 5.5% | 6.4% | 6.3% |
| Age 65 to 74 | 8.6% | 8.8% | 9.6% |
| Age 75 to 84 | 2.6% | 4.1% | 4.5% |
| Age 85 and over | 1.3% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Luling, LA | Harvey, LA | United States |
| White | 69.2% | 31.1% | 59.4% |
| Black | 20.9% | 48.1% | 12.2% |
| Asian | 1.7% | 7.1% | 5.6% |
| Native American | 0.4% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.1% | 0.4% |
| Two or More Races | 2.0% | 1.3% | 3.2% |
| Hispanic | 5.7% | 12.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Luling, LA | Harvey, LA | United States |
| Married Population | 55.8% | 41.4% | 49.8% |
| Currently Married | 54.4% | 37.5% | 48.0% |
| Married but Separated | 1.4% | 4.0% | 1.8% |
| Single Population | 44.2% | 58.6% | 50.2% |
| Never Married | 28.1% | 37.9% | 33.8% |
| Divorced | 11.2% | 14.4% | 10.8% |
| Widowed | 4.9% | 6.2% | 5.6% |
| space5 | | | |
| Household Size | 2.83 | 2.55 | 2.60 |
| Households | 4,962 | 8,133 | 124,010,992 |
| Family Households | 3,748 | 4,801 | 80,755,759 |
| Married couple, w/children | 35.6% | 24.1% | 30.5% |
| Married couple, no children | 34.5% | 33.2% | 42.9% |
| Non Family Households | 1,214 | 3,332 | 43,255,233 |
| Single householder, w/children | 24.3% | 26.5% | 15.8% |
| Single householder, no children | 5.5% | 16.1% | 10.8% |