| | Marseilles, IL | Kingston, TN | United States |
| Population | 4,384 | 5,942 | 329,725,481 |
| Female Population | 51.2% | 50.0% | 50.5% |
| Male Population | 48.8% | 50.0% | 49.5% |
| Median Age | 42.3 | 46.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,094 | 5,956 | 309,327,143 |
| Population - 2000 | 4,655 | 5,264 | 285,036,114 |
| Population - 1990 | 4,811 | 4,552 | 251,960,433 |
| Pop. 2000 to Now | 2.6% | 13.2% | 15.6% |
| Pop. 1990 to Now | -0.7% | 30.8% | 30.8% |
| space4 | | | |
| Population Density | 483.5 | 838.4 | 93.4 |
| Land Area | 9.1 | 7.1 | 3,531,905.4 |
| Water Area | 0.5 | 0.9 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Marseilles, IL | Kingston, TN | United States |
| Age 0 to 4 | 6.6% | 3.7% | 5.9% |
| Age 5 to 9 | 3.9% | 7.2% | 6.1% |
| Age 10 to 14 | 10.1% | 1.2% | 6.6% |
| Age 15 to 17 | 4.3% | 1.7% | 3.9% |
| Age 18 to 20 | 1.1% | 4.6% | 4.0% |
| Age 21 to 24 | 2.1% | 3.6% | 5.2% |
| Age 25 to 34 | 11.5% | 10.5% | 13.8% |
| Age 35 to 44 | 14.4% | 15.2% | 12.9% |
| Age 45 to 54 | 15.1% | 14.2% | 12.6% |
| Age 55 to 59 | 5.2% | 8.3% | 6.7% |
| Age 60 to 64 | 5.7% | 8.3% | 6.3% |
| Age 65 to 74 | 10.7% | 10.4% | 9.6% |
| Age 75 to 84 | 7.1% | 8.7% | 4.5% |
| Age 85 and over | 2.1% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Marseilles, IL | Kingston, TN | United States |
| White | 90.4% | 88.5% | 59.4% |
| Black | 0.3% | 5.6% | 12.2% |
| Asian | 2.7% | 1.3% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.5% | 0.4% |
| Two or More Races | 1.5% | 3.5% | 3.2% |
| Hispanic | 4.8% | 0.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Marseilles, IL | Kingston, TN | United States |
| Married Population | 55.4% | 50.1% | 49.8% |
| Currently Married | 55.4% | 47.4% | 48.0% |
| Married but Separated | 0.0% | 2.6% | 1.8% |
| Single Population | 44.6% | 49.9% | 50.2% |
| Never Married | 19.8% | 22.2% | 33.8% |
| Divorced | 16.5% | 15.6% | 10.8% |
| Widowed | 8.4% | 12.1% | 5.6% |
| space5 | | | |
| Household Size | 2.40 | 2.40 | 2.60 |
| Households | 1,802 | 2,366 | 124,010,992 |
| Family Households | 1,188 | 1,452 | 80,755,759 |
| Married couple, w/children | 27.4% | 21.1% | 30.5% |
| Married couple, no children | 53.9% | 55.2% | 42.9% |
| Non Family Households | 614 | 914 | 43,255,233 |
| Single householder, w/children | 13.0% | 13.6% | 15.8% |
| Single householder, no children | 5.7% | 10.1% | 10.8% |