| | Ellicottville, NY | Lewiston, NY | United States |
| Population | 1,259 | 15,899 | 329,725,481 |
| Female Population | 47.9% | 52.4% | 50.5% |
| Male Population | 52.1% | 47.6% | 49.5% |
| Median Age | 52.6 | 45.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,597 | 16,259 | 309,327,143 |
| Population - 2000 | 1,738 | 16,257 | 285,036,114 |
| Population - 1990 | 1,607 | 15,453 | 251,960,433 |
| Pop. 2000 to Now | -9.8% | -3.4% | 15.6% |
| Pop. 1990 to Now | -2.5% | 1.6% | 30.8% |
| space4 | | | |
| Population Density | 27.9 | 428.3 | 93.4 |
| Land Area | 45.1 | 37.1 | 3,531,905.4 |
| Water Area | 0.1 | 4.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ellicottville, NY | Lewiston, NY | United States |
| Age 0 to 4 | 4.9% | 2.7% | 5.9% |
| Age 5 to 9 | 3.0% | 3.6% | 6.1% |
| Age 10 to 14 | 4.7% | 4.5% | 6.6% |
| Age 15 to 17 | 4.4% | 5.1% | 3.9% |
| Age 18 to 20 | 0.8% | 9.8% | 4.0% |
| Age 21 to 24 | 4.1% | 3.7% | 5.2% |
| Age 25 to 34 | 5.6% | 9.8% | 13.8% |
| Age 35 to 44 | 11.0% | 10.0% | 12.9% |
| Age 45 to 54 | 15.7% | 9.8% | 12.6% |
| Age 55 to 59 | 12.8% | 7.5% | 6.7% |
| Age 60 to 64 | 7.3% | 8.5% | 6.3% |
| Age 65 to 74 | 20.2% | 12.6% | 9.6% |
| Age 75 to 84 | 2.1% | 6.6% | 4.5% |
| Age 85 and over | 3.5% | 5.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ellicottville, NY | Lewiston, NY | United States |
| White | 97.3% | 91.0% | 59.4% |
| Black | 0.0% | 1.1% | 12.2% |
| Asian | 0.0% | 1.3% | 5.6% |
| Native American | 0.6% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.5% | 0.4% |
| Two or More Races | 1.8% | 2.1% | 3.2% |
| Hispanic | 0.2% | 3.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ellicottville, NY | Lewiston, NY | United States |
| Married Population | 61.1% | 48.8% | 49.8% |
| Currently Married | 60.8% | 47.5% | 48.0% |
| Married but Separated | 0.3% | 1.3% | 1.8% |
| Single Population | 38.9% | 51.2% | 50.2% |
| Never Married | 26.3% | 32.4% | 33.8% |
| Divorced | 10.0% | 9.8% | 10.8% |
| Widowed | 2.6% | 9.0% | 5.6% |
| space5 | | | |
| Household Size | 2.13 | 2.28 | 2.60 |
| Households | 581 | 6,249 | 124,010,992 |
| Family Households | 355 | 4,118 | 80,755,759 |
| Married couple, w/children | 23.7% | 23.7% | 30.5% |
| Married couple, no children | 59.7% | 56.7% | 42.9% |
| Non Family Households | 226 | 2,131 | 43,255,233 |
| Single householder, w/children | 12.4% | 11.5% | 15.8% |
| Single householder, no children | 4.2% | 8.2% | 10.8% |