| | Hallowell, ME | Unicoi, TN | United States |
| Population | 2,542 | 3,793 | 329,725,481 |
| Female Population | 53.8% | 51.0% | 50.5% |
| Male Population | 46.2% | 49.0% | 49.5% |
| Median Age | 42 | 50.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,373 | 3,612 | 309,327,143 |
| Population - 2000 | 2,467 | 3,519 | 285,036,114 |
| Population - 1990 | 2,534 | 2,734 | 251,960,433 |
| Pop. 2000 to Now | -3.3% | 1.7% | 15.6% |
| Pop. 1990 to Now | -5.9% | 30.9% | 30.8% |
| space4 | | | |
| Population Density | 433.1 | 234.3 | 93.4 |
| Land Area | 5.9 | 16.2 | 3,531,905.4 |
| Water Area | 0.2 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hallowell, ME | Unicoi, TN | United States |
| Age 0 to 4 | 3.6% | 4.0% | 5.9% |
| Age 5 to 9 | 3.5% | 3.3% | 6.1% |
| Age 10 to 14 | 4.3% | 5.5% | 6.6% |
| Age 15 to 17 | 3.7% | 1.2% | 3.9% |
| Age 18 to 20 | 2.3% | 1.9% | 4.0% |
| Age 21 to 24 | 4.7% | 5.8% | 5.2% |
| Age 25 to 34 | 18.3% | 16.3% | 13.8% |
| Age 35 to 44 | 10.9% | 7.7% | 12.9% |
| Age 45 to 54 | 7.8% | 13.1% | 12.6% |
| Age 55 to 59 | 4.2% | 9.8% | 6.7% |
| Age 60 to 64 | 8.9% | 9.3% | 6.3% |
| Age 65 to 74 | 15.8% | 11.8% | 9.6% |
| Age 75 to 84 | 5.3% | 8.5% | 4.5% |
| Age 85 and over | 6.5% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hallowell, ME | Unicoi, TN | United States |
| White | 97.1% | 93.8% | 59.4% |
| Black | 0.0% | 0.2% | 12.2% |
| Asian | 1.5% | 0.4% | 5.6% |
| Native American | 0.2% | 0.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.4% | 0.8% | 3.2% |
| Hispanic | 0.8% | 3.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hallowell, ME | Unicoi, TN | United States |
| Married Population | 37.4% | 50.5% | 49.8% |
| Currently Married | 36.1% | 47.9% | 48.0% |
| Married but Separated | 1.3% | 2.6% | 1.8% |
| Single Population | 62.6% | 49.5% | 50.2% |
| Never Married | 40.0% | 22.0% | 33.8% |
| Divorced | 16.8% | 18.0% | 10.8% |
| Widowed | 5.9% | 9.6% | 5.6% |
| space5 | | | |
| Household Size | 1.92 | 2.28 | 2.60 |
| Households | 1,289 | 1,603 | 124,010,992 |
| Family Households | 547 | 933 | 80,755,759 |
| Married couple, w/children | 23.0% | 29.5% | 30.5% |
| Married couple, no children | 46.4% | 45.7% | 42.9% |
| Non Family Households | 742 | 670 | 43,255,233 |
| Single householder, w/children | 9.0% | 7.5% | 15.8% |
| Single householder, no children | 21.6% | 17.4% | 10.8% |