| | Attica, MI | Inverness, FL | United States |
| Population | 1,042 | 7,423 | 329,725,481 |
| Female Population | 49.4% | 57.3% | 50.5% |
| Male Population | 50.6% | 42.7% | 49.5% |
| Median Age | 51 | 58.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,031 | 7,255 | 309,327,143 |
| Population - 2000 | 1,106 | 6,789 | 285,036,114 |
| Population - 1990 | 994 | 5,797 | 251,960,433 |
| Pop. 2000 to Now | -49.3% | 13.0% | 15.6% |
| Pop. 1990 to Now | -43.6% | 32.4% | 30.8% |
| space4 | | | |
| Population Density | 218.2 | 975.2 | 93.4 |
| Land Area | 4.8 | 7.6 | 3,531,905.4 |
| Water Area | 0.2 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Attica, MI | Inverness, FL | United States |
| Age 0 to 4 | 1.2% | 3.7% | 5.9% |
| Age 5 to 9 | 2.9% | 3.4% | 6.1% |
| Age 10 to 14 | 6.1% | 3.1% | 6.6% |
| Age 15 to 17 | 2.0% | 3.6% | 3.9% |
| Age 18 to 20 | 1.0% | 2.8% | 4.0% |
| Age 21 to 24 | 3.5% | 2.7% | 5.2% |
| Age 25 to 34 | 6.6% | 7.9% | 13.8% |
| Age 35 to 44 | 22.9% | 10.4% | 12.9% |
| Age 45 to 54 | 6.8% | 7.0% | 12.6% |
| Age 55 to 59 | 7.0% | 8.0% | 6.7% |
| Age 60 to 64 | 9.8% | 9.3% | 6.3% |
| Age 65 to 74 | 25.2% | 18.1% | 9.6% |
| Age 75 to 84 | 4.9% | 14.9% | 4.5% |
| Age 85 and over | 0.0% | 5.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Attica, MI | Inverness, FL | United States |
| White | 97.6% | 85.7% | 59.4% |
| Black | 0.3% | 4.4% | 12.2% |
| Asian | 0.0% | 3.1% | 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 | 0.7% | 1.1% | 3.2% |
| Hispanic | 1.4% | 5.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Attica, MI | Inverness, FL | United States |
| Married Population | 61.3% | 42.5% | 49.8% |
| Currently Married | 56.9% | 42.1% | 48.0% |
| Married but Separated | 4.4% | 0.4% | 1.8% |
| Single Population | 38.7% | 57.5% | 50.2% |
| Never Married | 23.1% | 20.7% | 33.8% |
| Divorced | 12.7% | 22.8% | 10.8% |
| Widowed | 2.9% | 14.1% | 5.6% |
| space5 | | | |
| Household Size | 2.43 | 1.92 | 2.60 |
| Households | 429 | 3,664 | 124,010,992 |
| Family Households | 317 | 1,734 | 80,755,759 |
| Married couple, w/children | 11.0% | 14.2% | 30.5% |
| Married couple, no children | 66.6% | 60.6% | 42.9% |
| Non Family Households | 112 | 1,930 | 43,255,233 |
| Single householder, w/children | 15.1% | 14.5% | 15.8% |
| Single householder, no children | 7.3% | 10.7% | 10.8% |