| | Oxford, NY | Mattoon, IL | United States |
| Population | 3,620 | 16,982 | 329,725,481 |
| Female Population | 46.9% | 50.4% | 50.5% |
| Male Population | 53.1% | 49.6% | 49.5% |
| Median Age | 44.6 | 42.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,877 | 18,553 | 309,327,143 |
| Population - 2000 | 3,992 | 18,291 | 285,036,114 |
| Population - 1990 | 4,075 | 18,441 | 251,960,433 |
| Pop. 2000 to Now | -8.4% | -4.3% | 15.6% |
| Pop. 1990 to Now | -10.3% | -5.0% | 30.8% |
| space4 | | | |
| Population Density | 60.3 | 1,647.8 | 93.4 |
| Land Area | 60.1 | 10.3 | 3,531,905.4 |
| Water Area | 0.4 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Oxford, NY | Mattoon, IL | United States |
| Age 0 to 4 | 3.4% | 4.7% | 5.9% |
| Age 5 to 9 | 6.6% | 5.5% | 6.1% |
| Age 10 to 14 | 5.9% | 7.6% | 6.6% |
| Age 15 to 17 | 4.7% | 3.1% | 3.9% |
| Age 18 to 20 | 4.3% | 4.0% | 4.0% |
| Age 21 to 24 | 6.2% | 5.1% | 5.2% |
| Age 25 to 34 | 7.4% | 11.7% | 13.8% |
| Age 35 to 44 | 12.0% | 13.0% | 12.9% |
| Age 45 to 54 | 12.6% | 12.8% | 12.6% |
| Age 55 to 59 | 9.3% | 7.3% | 6.7% |
| Age 60 to 64 | 8.1% | 6.2% | 6.3% |
| Age 65 to 74 | 11.2% | 10.1% | 9.6% |
| Age 75 to 84 | 6.3% | 5.5% | 4.5% |
| Age 85 and over | 2.0% | 3.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Oxford, NY | Mattoon, IL | United States |
| White | 94.5% | 92.9% | 59.4% |
| Black | 0.7% | 2.3% | 12.2% |
| Asian | 0.0% | 0.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.3% | 0.0% | 0.4% |
| Two or More Races | 0.8% | 2.0% | 3.2% |
| Hispanic | 2.8% | 2.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Oxford, NY | Mattoon, IL | United States |
| Married Population | 47.8% | 39.3% | 49.8% |
| Currently Married | 43.4% | 38.5% | 48.0% |
| Married but Separated | 4.5% | 0.8% | 1.8% |
| Single Population | 52.2% | 60.7% | 50.2% |
| Never Married | 32.5% | 30.0% | 33.8% |
| Divorced | 12.6% | 21.3% | 10.8% |
| Widowed | 7.0% | 9.4% | 5.6% |
| space5 | | | |
| Household Size | 2.36 | 2.06 | 2.60 |
| Households | 1,503 | 8,012 | 124,010,992 |
| Family Households | 956 | 4,308 | 80,755,759 |
| Married couple, w/children | 23.3% | 20.8% | 30.5% |
| Married couple, no children | 42.5% | 39.3% | 42.9% |
| Non Family Households | 547 | 3,704 | 43,255,233 |
| Single householder, w/children | 22.2% | 26.4% | 15.8% |
| Single householder, no children | 12.0% | 13.4% | 10.8% |