| | Baileyton, AL | Mercerville, NJ | United States |
| Population | 1,114 | 14,234 | 329,725,481 |
| Female Population | 56.8% | 54.1% | 50.5% |
| Male Population | 43.2% | 45.9% | 49.5% |
| Median Age | 33.1 | 44 | 38.4 |
| space3 | | | |
| Population - 2010 | 604 | 12,662 | 309,327,143 |
| Population - 2000 | 684 | 13,217 | 285,036,114 |
| Population - 1990 | 352 | 13,227 | 251,960,433 |
| Pop. 2000 to Now | -9.8% | -0.8% | 15.6% |
| Pop. 1990 to Now | 75.3% | -0.8% | 30.8% |
| space4 | | | |
| Population Density | 212.0 | 3,859.5 | 93.4 |
| Land Area | 5.3 | 3.7 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Baileyton, AL | Mercerville, NJ | United States |
| Age 0 to 4 | 8.0% | 4.7% | 5.9% |
| Age 5 to 9 | 11.0% | 5.1% | 6.1% |
| Age 10 to 14 | 7.8% | 5.3% | 6.6% |
| Age 15 to 17 | 5.5% | 4.5% | 3.9% |
| Age 18 to 20 | 1.4% | 4.3% | 4.0% |
| Age 21 to 24 | 2.9% | 5.5% | 5.2% |
| Age 25 to 34 | 20.5% | 11.2% | 13.8% |
| Age 35 to 44 | 7.1% | 10.6% | 12.9% |
| Age 45 to 54 | 6.3% | 15.3% | 12.6% |
| Age 55 to 59 | 15.9% | 6.5% | 6.7% |
| Age 60 to 64 | 5.4% | 6.9% | 6.3% |
| Age 65 to 74 | 4.8% | 10.6% | 9.6% |
| Age 75 to 84 | 2.6% | 6.6% | 4.5% |
| Age 85 and over | 0.9% | 2.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Baileyton, AL | Mercerville, NJ | United States |
| White | 87.7% | 73.6% | 59.4% |
| Black | 0.0% | 5.9% | 12.2% |
| Asian | 0.0% | 3.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 1.3% | 2.1% | 3.2% |
| Hispanic | 11.0% | 14.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Baileyton, AL | Mercerville, NJ | United States |
| Married Population | 56.9% | 57.7% | 49.8% |
| Currently Married | 54.5% | 55.4% | 48.0% |
| Married but Separated | 2.3% | 2.4% | 1.8% |
| Single Population | 43.1% | 42.3% | 50.2% |
| Never Married | 17.8% | 27.2% | 33.8% |
| Divorced | 24.0% | 8.4% | 10.8% |
| Widowed | 1.3% | 6.7% | 5.6% |
| space5 | | | |
| Household Size | 2.57 | 2.78 | 2.60 |
| Households | 433 | 4,998 | 124,010,992 |
| Family Households | 239 | 3,799 | 80,755,759 |
| Married couple, w/children | 53.6% | 32.2% | 30.5% |
| Married couple, no children | 33.9% | 47.7% | 42.9% |
| Non Family Households | 194 | 1,199 | 43,255,233 |
| Single householder, w/children | 10.5% | 8.5% | 15.8% |
| Single householder, no children | 2.1% | 11.6% | 10.8% |