| | Manchester, TN | Beaufort, SC | United States |
| Population | 11,956 | 12,899 | 329,725,481 |
| Female Population | 48.7% | 52.0% | 50.5% |
| Male Population | 51.3% | 48.0% | 49.5% |
| Median Age | 32.4 | 34.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 10,123 | 12,363 | 309,327,143 |
| Population - 2000 | 8,294 | 12,950 | 285,036,114 |
| Population - 1990 | 7,709 | 9,576 | 251,960,433 |
| Pop. 2000 to Now | 35.8% | 2.0% | 15.6% |
| Pop. 1990 to Now | 46.1% | 37.9% | 30.8% |
| space4 | | | |
| Population Density | 838.1 | 535.6 | 93.4 |
| Land Area | 14.3 | 24.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.9 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Manchester, TN | Beaufort, SC | United States |
| Age 0 to 4 | 5.6% | 6.7% | 5.9% |
| Age 5 to 9 | 7.6% | 4.4% | 6.1% |
| Age 10 to 14 | 8.3% | 5.7% | 6.6% |
| Age 15 to 17 | 4.0% | 3.8% | 3.9% |
| Age 18 to 20 | 6.5% | 4.5% | 4.0% |
| Age 21 to 24 | 5.4% | 6.3% | 5.2% |
| Age 25 to 34 | 14.6% | 19.0% | 13.8% |
| Age 35 to 44 | 11.3% | 9.9% | 12.9% |
| Age 45 to 54 | 10.0% | 8.5% | 12.6% |
| Age 55 to 59 | 3.8% | 8.8% | 6.7% |
| Age 60 to 64 | 7.4% | 5.8% | 6.3% |
| Age 65 to 74 | 9.1% | 10.4% | 9.6% |
| Age 75 to 84 | 5.1% | 4.7% | 4.5% |
| Age 85 and over | 1.3% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Manchester, TN | Beaufort, SC | United States |
| White | 79.7% | 61.9% | 59.4% |
| Black | 7.8% | 30.1% | 12.2% |
| Asian | 1.7% | 0.2% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.0% | 0.2% |
| Other | 1.3% | 0.1% | 0.4% |
| Two or More Races | 2.4% | 3.4% | 3.2% |
| Hispanic | 7.0% | 4.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Manchester, TN | Beaufort, SC | United States |
| Married Population | 39.3% | 42.3% | 49.8% |
| Currently Married | 36.7% | 40.3% | 48.0% |
| Married but Separated | 2.6% | 1.9% | 1.8% |
| Single Population | 60.7% | 57.7% | 50.2% |
| Never Married | 33.1% | 39.0% | 33.8% |
| Divorced | 20.6% | 10.4% | 10.8% |
| Widowed | 7.0% | 8.3% | 5.6% |
| space5 | | | |
| Household Size | 2.50 | 2.31 | 2.60 |
| Households | 4,609 | 5,005 | 124,010,992 |
| Family Households | 2,433 | 3,084 | 80,755,759 |
| Married couple, w/children | 29.9% | 26.6% | 30.5% |
| Married couple, no children | 36.9% | 38.0% | 42.9% |
| Non Family Households | 2,176 | 1,921 | 43,255,233 |
| Single householder, w/children | 21.9% | 22.1% | 15.8% |
| Single householder, no children | 11.3% | 13.4% | 10.8% |