| | Franklin, TX | Rockdale, TX | United States |
| Population | 1,358 | 5,378 | 329,725,481 |
| Female Population | 50.1% | 54.1% | 50.5% |
| Male Population | 49.9% | 46.0% | 49.5% |
| Median Age | 40.1 | 37.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,610 | 5,493 | 309,327,143 |
| Population - 2000 | 1,470 | 5,439 | 285,036,114 |
| Population - 1990 | 1,336 | 5,235 | 251,960,433 |
| Pop. 2000 to Now | 11.8% | 0.2% | 15.6% |
| Pop. 1990 to Now | 23.0% | 4.1% | 30.8% |
| space4 | | | |
| Population Density | 1,160.7 | 1,342.5 | 93.4 |
| Land Area | 1.2 | 4.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Franklin, TX | Rockdale, TX | United States |
| Age 0 to 4 | 3.4% | 6.0% | 5.9% |
| Age 5 to 9 | 6.8% | 6.8% | 6.1% |
| Age 10 to 14 | 8.0% | 7.0% | 6.6% |
| Age 15 to 17 | 4.2% | 3.4% | 3.9% |
| Age 18 to 20 | 3.5% | 8.7% | 4.0% |
| Age 21 to 24 | 7.7% | 3.5% | 5.2% |
| Age 25 to 34 | 8.0% | 12.2% | 13.8% |
| Age 35 to 44 | 17.3% | 9.6% | 12.9% |
| Age 45 to 54 | 12.3% | 14.4% | 12.6% |
| Age 55 to 59 | 5.1% | 5.8% | 6.7% |
| Age 60 to 64 | 4.6% | 7.2% | 6.3% |
| Age 65 to 74 | 13.0% | 9.2% | 9.6% |
| Age 75 to 84 | 3.7% | 4.5% | 4.5% |
| Age 85 and over | 2.7% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Franklin, TX | Rockdale, TX | United States |
| White | 71.9% | 53.7% | 59.4% |
| Black | 17.1% | 10.7% | 12.2% |
| Asian | 0.0% | 0.8% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.2% | 0.7% | 3.2% |
| Hispanic | 9.8% | 33.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Franklin, TX | Rockdale, TX | United States |
| Married Population | 42.1% | 50.5% | 49.8% |
| Currently Married | 39.8% | 48.3% | 48.0% |
| Married but Separated | 2.3% | 2.2% | 1.8% |
| Single Population | 57.9% | 49.5% | 50.2% |
| Never Married | 30.5% | 31.2% | 33.8% |
| Divorced | 17.6% | 12.9% | 10.8% |
| Widowed | 9.7% | 5.4% | 5.6% |
| space5 | | | |
| Household Size | 2.65 | 2.62 | 2.60 |
| Households | 473 | 2,018 | 124,010,992 |
| Family Households | 310 | 1,131 | 80,755,759 |
| Married couple, w/children | 28.7% | 38.2% | 30.5% |
| Married couple, no children | 37.4% | 44.8% | 42.9% |
| Non Family Households | 163 | 887 | 43,255,233 |
| Single householder, w/children | 23.2% | 7.0% | 15.8% |
| Single householder, no children | 10.6% | 10.0% | 10.8% |