| | Morgan City, LA | Franklin, LA | United States |
| Population | 11,525 | 6,811 | 329,725,481 |
| Female Population | 49.5% | 52.5% | 50.5% |
| Male Population | 50.5% | 47.5% | 49.5% |
| Median Age | 43.6 | 38 | 38.4 |
| space3 | | | |
| Population - 2010 | 12,368 | 7,648 | 309,327,143 |
| Population - 2000 | 12,703 | 8,354 | 285,036,114 |
| Population - 1990 | 14,531 | 9,004 | 251,960,433 |
| Pop. 2000 to Now | -17.3% | -21.2% | 15.6% |
| Pop. 1990 to Now | -27.7% | -26.9% | 30.8% |
| space4 | | | |
| Population Density | 1,926.3 | 686.5 | 93.4 |
| Land Area | 6.0 | 9.9 | 3,531,905.4 |
| Water Area | 0.3 | 0.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Morgan City, LA | Franklin, LA | United States |
| Age 0 to 4 | 7.6% | 7.8% | 5.9% |
| Age 5 to 9 | 5.7% | 6.0% | 6.1% |
| Age 10 to 14 | 7.0% | 7.5% | 6.6% |
| Age 15 to 17 | 3.5% | 5.3% | 3.9% |
| Age 18 to 20 | 1.5% | 5.6% | 4.0% |
| Age 21 to 24 | 2.8% | 4.6% | 5.2% |
| Age 25 to 34 | 11.5% | 10.8% | 13.8% |
| Age 35 to 44 | 11.8% | 9.2% | 12.9% |
| Age 45 to 54 | 13.8% | 11.0% | 12.6% |
| Age 55 to 59 | 6.4% | 8.7% | 6.7% |
| Age 60 to 64 | 10.5% | 6.3% | 6.3% |
| Age 65 to 74 | 11.4% | 10.2% | 9.6% |
| Age 75 to 84 | 5.0% | 5.1% | 4.5% |
| Age 85 and over | 1.5% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Morgan City, LA | Franklin, LA | United States |
| White | 62.1% | 36.1% | 59.4% |
| Black | 18.7% | 57.1% | 12.2% |
| Asian | 0.7% | 0.0% | 5.6% |
| Native American | 1.1% | 0.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.8% | 0.4% |
| Two or More Races | 3.3% | 3.8% | 3.2% |
| Hispanic | 14.0% | 1.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Morgan City, LA | Franklin, LA | United States |
| Married Population | 45.4% | 34.3% | 49.8% |
| Currently Married | 40.7% | 32.3% | 48.0% |
| Married but Separated | 4.7% | 2.1% | 1.8% |
| Single Population | 54.6% | 65.7% | 50.2% |
| Never Married | 32.3% | 46.2% | 33.8% |
| Divorced | 13.9% | 12.3% | 10.8% |
| Widowed | 8.5% | 7.1% | 5.6% |
| space5 | | | |
| Household Size | 2.43 | 2.65 | 2.60 |
| Households | 4,689 | 2,508 | 124,010,992 |
| Family Households | 2,662 | 1,376 | 80,755,759 |
| Married couple, w/children | 31.1% | 23.0% | 30.5% |
| Married couple, no children | 38.7% | 32.8% | 42.9% |
| Non Family Households | 2,027 | 1,132 | 43,255,233 |
| Single householder, w/children | 20.6% | 23.0% | 15.8% |
| Single householder, no children | 9.6% | 21.1% | 10.8% |