| | Cattaraugus, NY | Darien, CT | United States |
| Population | 1,056 | 21,485 | 329,725,481 |
| Female Population | 49.6% | 50.4% | 50.5% |
| Male Population | 50.4% | 49.6% | 49.5% |
| Median Age | 40.6 | 39.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 967 | 20,752 | 309,327,143 |
| Population - 2000 | 1,075 | 19,607 | 285,036,114 |
| Population - 1990 | 1,100 | 18,196 | 251,960,433 |
| Pop. 2000 to Now | -16.3% | 10.6% | 15.6% |
| Pop. 1990 to Now | -18.2% | 19.2% | 30.8% |
| space4 | | | |
| Population Density | 945.4 | 1,697.9 | 93.4 |
| Land Area | 1.1 | 12.7 | 3,531,905.4 |
| Water Area | 0.0 | 10.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Cattaraugus, NY | Darien, CT | United States |
| Age 0 to 4 | 4.9% | 6.4% | 5.9% |
| Age 5 to 9 | 6.8% | 9.3% | 6.1% |
| Age 10 to 14 | 10.4% | 10.4% | 6.6% |
| Age 15 to 17 | 4.2% | 5.9% | 3.9% |
| Age 18 to 20 | 1.6% | 3.4% | 4.0% |
| Age 21 to 24 | 4.1% | 3.3% | 5.2% |
| Age 25 to 34 | 14.7% | 5.3% | 13.8% |
| Age 35 to 44 | 9.2% | 13.8% | 12.9% |
| Age 45 to 54 | 11.4% | 16.4% | 12.6% |
| Age 55 to 59 | 7.4% | 6.2% | 6.7% |
| Age 60 to 64 | 7.0% | 6.4% | 6.3% |
| Age 65 to 74 | 10.4% | 7.7% | 9.6% |
| Age 75 to 84 | 4.3% | 3.1% | 4.5% |
| Age 85 and over | 3.7% | 2.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Cattaraugus, NY | Darien, CT | United States |
| White | 92.7% | 84.8% | 59.4% |
| Black | 0.5% | 0.8% | 12.2% |
| Asian | 0.0% | 6.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 0.4% | 3.1% | 3.2% |
| Hispanic | 6.4% | 4.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Cattaraugus, NY | Darien, CT | United States |
| Married Population | 45.5% | 67.1% | 49.8% |
| Currently Married | 44.0% | 65.3% | 48.0% |
| Married but Separated | 1.5% | 1.8% | 1.8% |
| Single Population | 54.5% | 32.9% | 50.2% |
| Never Married | 33.9% | 24.4% | 33.8% |
| Divorced | 15.7% | 4.3% | 10.8% |
| Widowed | 4.9% | 4.2% | 5.6% |
| space5 | | | |
| Household Size | 2.56 | 3.07 | 2.60 |
| Households | 409 | 6,978 | 124,010,992 |
| Family Households | 278 | 5,743 | 80,755,759 |
| Married couple, w/children | 21.9% | 50.4% | 30.5% |
| Married couple, no children | 34.5% | 38.0% | 42.9% |
| Non Family Households | 131 | 1,235 | 43,255,233 |
| Single householder, w/children | 32.7% | 4.7% | 15.8% |
| Single householder, no children | 10.8% | 6.8% | 10.8% |