| | Altoona, AL | Nauvoo, AL | United States |
| Population | 1,444 | 185 | 329,725,481 |
| Female Population | 49.4% | 50.8% | 50.5% |
| Male Population | 50.6% | 49.2% | 49.5% |
| Median Age | 40.2 | 38.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 937 | 217 | 309,327,143 |
| Population - 2000 | 984 | 284 | 285,036,114 |
| Population - 1990 | 960 | 240 | 251,960,433 |
| Pop. 2000 to Now | -7.0% | -29.2% | 15.6% |
| Pop. 1990 to Now | -4.7% | -16.3% | 30.8% |
| space4 | | | |
| Population Density | 334.1 | 187.1 | 93.4 |
| Land Area | 4.3 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Altoona, AL | Nauvoo, AL | United States |
| Age 0 to 4 | 6.0% | 4.3% | 5.9% |
| Age 5 to 9 | 3.0% | 13.0% | 6.1% |
| Age 10 to 14 | 5.8% | 4.3% | 6.6% |
| Age 15 to 17 | 3.9% | 2.7% | 3.9% |
| Age 18 to 20 | 3.0% | 5.4% | 4.0% |
| Age 21 to 24 | 4.6% | 3.2% | 5.2% |
| Age 25 to 34 | 15.2% | 11.9% | 13.8% |
| Age 35 to 44 | 21.5% | 7.0% | 12.9% |
| Age 45 to 54 | 12.4% | 13.5% | 12.6% |
| Age 55 to 59 | 4.0% | 12.4% | 6.7% |
| Age 60 to 64 | 5.9% | 5.4% | 6.3% |
| Age 65 to 74 | 10.0% | 10.8% | 9.6% |
| Age 75 to 84 | 4.0% | 5.9% | 4.5% |
| Age 85 and over | 0.6% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Altoona, AL | Nauvoo, AL | United States |
| White | 93.7% | 83.2% | 59.4% |
| Black | 1.6% | 0.0% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 0.6% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.4% | 1.1% | 3.2% |
| Hispanic | 1.6% | 15.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Altoona, AL | Nauvoo, AL | United States |
| Married Population | 42.6% | 44.1% | 49.8% |
| Currently Married | 38.7% | 36.6% | 48.0% |
| Married but Separated | 3.9% | 7.6% | 1.8% |
| Single Population | 57.4% | 55.9% | 50.2% |
| Never Married | 35.5% | 20.7% | 33.8% |
| Divorced | 12.8% | 31.7% | 10.8% |
| Widowed | 9.1% | 3.4% | 5.6% |
| space5 | | | |
| Household Size | 3.04 | 2.50 | 2.60 |
| Households | 460 | 74 | 124,010,992 |
| Family Households | 334 | 44 | 80,755,759 |
| Married couple, w/children | 18.9% | 25.0% | 30.5% |
| Married couple, no children | 43.1% | 36.4% | 42.9% |
| Non Family Households | 126 | 30 | 43,255,233 |
| Single householder, w/children | 21.6% | 34.1% | 15.8% |
| Single householder, no children | 16.5% | 4.5% | 10.8% |