| | Northville, MI | Fort Payne, AL | United States |
| Population | 6,106 | 14,730 | 329,725,481 |
| Female Population | 53.2% | 51.8% | 50.5% |
| Male Population | 46.8% | 48.2% | 49.5% |
| Median Age | 50.4 | 39.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,971 | 14,069 | 309,327,143 |
| Population - 2000 | 6,459 | 12,938 | 285,036,114 |
| Population - 1990 | 6,226 | 11,838 | 251,960,433 |
| Pop. 2000 to Now | -8.3% | 8.5% | 15.6% |
| Pop. 1990 to Now | -4.8% | 18.6% | 30.8% |
| space4 | | | |
| Population Density | 2,994.6 | 262.2 | 93.4 |
| Land Area | 2.0 | 56.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Northville, MI | Fort Payne, AL | United States |
| Age 0 to 4 | 4.9% | 6.9% | 5.9% |
| Age 5 to 9 | 3.9% | 6.8% | 6.1% |
| Age 10 to 14 | 6.4% | 8.0% | 6.6% |
| Age 15 to 17 | 3.4% | 2.9% | 3.9% |
| Age 18 to 20 | 1.6% | 2.7% | 4.0% |
| Age 21 to 24 | 2.4% | 6.0% | 5.2% |
| Age 25 to 34 | 9.5% | 10.1% | 13.8% |
| Age 35 to 44 | 8.6% | 13.1% | 12.9% |
| Age 45 to 54 | 14.8% | 10.7% | 12.6% |
| Age 55 to 59 | 9.2% | 8.2% | 6.7% |
| Age 60 to 64 | 12.0% | 6.6% | 6.3% |
| Age 65 to 74 | 13.6% | 11.3% | 9.6% |
| Age 75 to 84 | 6.9% | 5.2% | 4.5% |
| Age 85 and over | 2.8% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Northville, MI | Fort Payne, AL | United States |
| White | 92.1% | 76.1% | 59.4% |
| Black | 0.0% | 2.9% | 12.2% |
| Asian | 3.5% | 0.0% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.4% | 0.4% |
| Two or More Races | 0.3% | 1.5% | 3.2% |
| Hispanic | 4.1% | 17.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Northville, MI | Fort Payne, AL | United States |
| Married Population | 56.4% | 52.3% | 49.8% |
| Currently Married | 56.2% | 48.8% | 48.0% |
| Married but Separated | 0.2% | 3.5% | 1.8% |
| Single Population | 43.6% | 47.7% | 50.2% |
| Never Married | 18.2% | 22.9% | 33.8% |
| Divorced | 16.9% | 18.3% | 10.8% |
| Widowed | 8.6% | 6.6% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.58 | 2.60 |
| Households | 2,652 | 5,536 | 124,010,992 |
| Family Households | 1,797 | 3,501 | 80,755,759 |
| Married couple, w/children | 25.5% | 32.6% | 30.5% |
| Married couple, no children | 52.5% | 41.7% | 42.9% |
| Non Family Households | 855 | 2,035 | 43,255,233 |
| Single householder, w/children | 9.9% | 15.2% | 15.8% |
| Single householder, no children | 12.1% | 10.4% | 10.8% |