| | Franklin, OH | Northville, MI | United States |
| Population | 11,650 | 6,106 | 329,725,481 |
| Female Population | 48.1% | 53.2% | 50.5% |
| Male Population | 51.9% | 46.8% | 49.5% |
| Median Age | 36.1 | 50.4 | 38.4 |
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| Population - 2010 | 11,777 | 5,971 | 309,327,143 |
| Population - 2000 | 11,396 | 6,459 | 285,036,114 |
| Population - 1990 | 11,026 | 6,226 | 251,960,433 |
| Pop. 2000 to Now | 2.2% | -8.3% | 15.6% |
| Pop. 1990 to Now | 5.6% | -4.8% | 30.8% |
| space4 | | | |
| Population Density | 1,269.3 | 2,994.6 | 93.4 |
| Land Area | 9.2 | 2.0 | 3,531,905.4 |
| Water Area | 0.2 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Franklin, OH | Northville, MI | United States |
| Age 0 to 4 | 5.5% | 4.9% | 5.9% |
| Age 5 to 9 | 6.6% | 3.9% | 6.1% |
| Age 10 to 14 | 6.3% | 6.4% | 6.6% |
| Age 15 to 17 | 4.9% | 3.4% | 3.9% |
| Age 18 to 20 | 5.6% | 1.6% | 4.0% |
| Age 21 to 24 | 6.7% | 2.4% | 5.2% |
| Age 25 to 34 | 13.7% | 9.5% | 13.8% |
| Age 35 to 44 | 11.3% | 8.6% | 12.9% |
| Age 45 to 54 | 12.7% | 14.8% | 12.6% |
| Age 55 to 59 | 6.4% | 9.2% | 6.7% |
| Age 60 to 64 | 9.0% | 12.0% | 6.3% |
| Age 65 to 74 | 5.6% | 13.6% | 9.6% |
| Age 75 to 84 | 3.3% | 6.9% | 4.5% |
| Age 85 and over | 2.4% | 2.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Franklin, OH | Northville, MI | United States |
| White | 88.7% | 92.1% | 59.4% |
| Black | 0.4% | 0.0% | 12.2% |
| Asian | 2.9% | 3.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 3.2% | 0.3% | 3.2% |
| Hispanic | 4.7% | 4.1% | 18.4% |
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| Marriage & Family | | | |
| | Franklin, OH | Northville, MI | United States |
| Married Population | 46.6% | 56.4% | 49.8% |
| Currently Married | 45.2% | 56.2% | 48.0% |
| Married but Separated | 1.4% | 0.2% | 1.8% |
| Single Population | 53.4% | 43.6% | 50.2% |
| Never Married | 34.1% | 18.2% | 33.8% |
| Divorced | 11.5% | 16.9% | 10.8% |
| Widowed | 7.8% | 8.6% | 5.6% |
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| Household Size | 2.49 | 2.29 | 2.60 |
| Households | 4,643 | 2,652 | 124,010,992 |
| Family Households | 3,057 | 1,797 | 80,755,759 |
| Married couple, w/children | 25.2% | 25.5% | 30.5% |
| Married couple, no children | 41.1% | 52.5% | 42.9% |
| Non Family Households | 1,586 | 855 | 43,255,233 |
| Single householder, w/children | 19.8% | 9.9% | 15.8% |
| Single householder, no children | 14.0% | 12.1% | 10.8% |