| | Franklin, IA | Melrose, IA | United States |
| Population | 137 | 204 | 329,725,481 |
| Female Population | 42.3% | 58.3% | 50.5% |
| Male Population | 57.7% | 41.7% | 49.5% |
| Median Age | 53.1 | 39.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 145 | 112 | 309,327,143 |
| Population - 2000 | 136 | 130 | 285,036,114 |
| Population - 1990 | 152 | 150 | 251,960,433 |
| Pop. 2000 to Now | -2.9% | -18.5% | 15.6% |
| Pop. 1990 to Now | -13.2% | -29.3% | 30.8% |
| space4 | | | |
| Population Density | 878.2 | 202.0 | 93.4 |
| Land Area | 0.2 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Franklin, IA | Melrose, IA | United States |
| Age 0 to 4 | 2.2% | 1.0% | 5.9% |
| Age 5 to 9 | 1.5% | 3.4% | 6.1% |
| Age 10 to 14 | 10.9% | 10.3% | 6.6% |
| Age 15 to 17 | 1.5% | 7.4% | 3.9% |
| Age 18 to 20 | 0.7% | 15.2% | 4.0% |
| Age 21 to 24 | 1.5% | 1.0% | 5.2% |
| Age 25 to 34 | 8.0% | 1.0% | 13.8% |
| Age 35 to 44 | 14.6% | 16.2% | 12.9% |
| Age 45 to 54 | 11.7% | 1.5% | 12.6% |
| Age 55 to 59 | 8.0% | 0.5% | 6.7% |
| Age 60 to 64 | 11.7% | 2.0% | 6.3% |
| Age 65 to 74 | 6.6% | 17.6% | 9.6% |
| Age 75 to 84 | 20.4% | 6.9% | 4.5% |
| Age 85 and over | 0.7% | 16.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Franklin, IA | Melrose, IA | United States |
| White | 96.4% | 84.3% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 1.0% | 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 | 3.7% | 14.7% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Franklin, IA | Melrose, IA | United States |
| Married Population | 67.5% | 54.0% | 49.8% |
| Currently Married | 67.5% | 54.0% | 48.0% |
| Married but Separated | 0.0% | 0.0% | 1.8% |
| Single Population | 32.5% | 46.0% | 50.2% |
| Never Married | 5.1% | 39.1% | 33.8% |
| Divorced | 23.9% | 5.2% | 10.8% |
| Widowed | 3.4% | 1.7% | 5.6% |
| space5 | | | |
| Household Size | 1.90 | 2.96 | 2.60 |
| Households | 72 | 69 | 124,010,992 |
| Family Households | 42 | 54 | 80,755,759 |
| Married couple, w/children | 33.3% | 22.2% | 30.5% |
| Married couple, no children | 61.9% | 68.5% | 42.9% |
| Non Family Households | 30 | 15 | 43,255,233 |
| Single householder, w/children | 0.0% | 9.3% | 15.8% |
| Single householder, no children | 4.8% | 0.0% | 10.8% |