| | Trenton, GA | Harrison, TN | United States |
| Population | 2,095 | 8,383 | 329,725,481 |
| Female Population | 52.8% | 50.0% | 50.5% |
| Male Population | 47.2% | 50.0% | 49.5% |
| Median Age | 40.8 | 42.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,296 | 7,917 | 309,327,143 |
| Population - 2000 | 1,942 | 7,630 | 285,036,114 |
| Population - 1990 | 1,994 | 7,191 | 251,960,433 |
| Pop. 2000 to Now | 10.9% | 2.2% | 15.6% |
| Pop. 1990 to Now | 8.0% | 8.4% | 30.8% |
| space4 | | | |
| Population Density | 651.4 | 1,297.3 | 93.4 |
| Land Area | 3.2 | 6.5 | 3,531,905.4 |
| Water Area | 0.0 | 1.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Trenton, GA | Harrison, TN | United States |
| Age 0 to 4 | 8.1% | 6.4% | 5.9% |
| Age 5 to 9 | 6.8% | 4.4% | 6.1% |
| Age 10 to 14 | 6.0% | 7.4% | 6.6% |
| Age 15 to 17 | 1.7% | 1.3% | 3.9% |
| Age 18 to 20 | 4.3% | 1.2% | 4.0% |
| Age 21 to 24 | 4.0% | 3.1% | 5.2% |
| Age 25 to 34 | 13.4% | 17.5% | 13.8% |
| Age 35 to 44 | 12.2% | 11.2% | 12.9% |
| Age 45 to 54 | 14.9% | 14.9% | 12.6% |
| Age 55 to 59 | 6.6% | 8.2% | 6.7% |
| Age 60 to 64 | 6.2% | 7.9% | 6.3% |
| Age 65 to 74 | 9.6% | 10.1% | 9.6% |
| Age 75 to 84 | 4.7% | 3.6% | 4.5% |
| Age 85 and over | 1.6% | 2.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Trenton, GA | Harrison, TN | United States |
| White | 86.3% | 76.2% | 59.4% |
| Black | 1.1% | 20.1% | 12.2% |
| Asian | 0.3% | 1.5% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.0% | 0.2% |
| Other | 1.5% | 0.0% | 0.4% |
| Two or More Races | 2.3% | 0.7% | 3.2% |
| Hispanic | 8.3% | 1.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Trenton, GA | Harrison, TN | United States |
| Married Population | 51.9% | 59.3% | 49.8% |
| Currently Married | 48.1% | 57.4% | 48.0% |
| Married but Separated | 3.8% | 1.9% | 1.8% |
| Single Population | 48.1% | 40.7% | 50.2% |
| Never Married | 23.3% | 26.4% | 33.8% |
| Divorced | 18.0% | 10.2% | 10.8% |
| Widowed | 6.9% | 4.1% | 5.6% |
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| Household Size | 2.33 | 2.49 | 2.60 |
| Households | 855 | 3,360 | 124,010,992 |
| Family Households | 557 | 2,478 | 80,755,759 |
| Married couple, w/children | 25.7% | 23.4% | 30.5% |
| Married couple, no children | 42.5% | 56.5% | 42.9% |
| Non Family Households | 298 | 882 | 43,255,233 |
| Single householder, w/children | 22.8% | 9.8% | 15.8% |
| Single householder, no children | 9.0% | 10.4% | 10.8% |