| | Williamsville, NY | Linglestown, PA | United States |
| Population | 5,419 | 6,380 | 329,725,481 |
| Female Population | 52.2% | 53.7% | 50.5% |
| Male Population | 47.8% | 46.3% | 49.5% |
| Median Age | 46.9 | 44.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,273 | 6,857 | 309,327,143 |
| Population - 2000 | 5,573 | 6,414 | 285,036,114 |
| Population - 1990 | 5,583 | 5,862 | 251,960,433 |
| Pop. 2000 to Now | -7.2% | -4.5% | 15.6% |
| Pop. 1990 to Now | -7.4% | 4.5% | 30.8% |
| space4 | | | |
| Population Density | 4,307.6 | 1,679.8 | 93.4 |
| Land Area | 1.3 | 3.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Williamsville, NY | Linglestown, PA | United States |
| Age 0 to 4 | 7.5% | 4.6% | 5.9% |
| Age 5 to 9 | 3.8% | 4.6% | 6.1% |
| Age 10 to 14 | 3.5% | 4.0% | 6.6% |
| Age 15 to 17 | 3.7% | 7.6% | 3.9% |
| Age 18 to 20 | 2.1% | 3.7% | 4.0% |
| Age 21 to 24 | 3.8% | 1.8% | 5.2% |
| Age 25 to 34 | 12.3% | 7.8% | 13.8% |
| Age 35 to 44 | 11.7% | 16.8% | 12.9% |
| Age 45 to 54 | 13.4% | 14.2% | 12.6% |
| Age 55 to 59 | 5.6% | 5.3% | 6.7% |
| Age 60 to 64 | 4.5% | 9.9% | 6.3% |
| Age 65 to 74 | 15.6% | 12.5% | 9.6% |
| Age 75 to 84 | 6.8% | 6.0% | 4.5% |
| Age 85 and over | 5.8% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Williamsville, NY | Linglestown, PA | United States |
| White | 88.0% | 75.8% | 59.4% |
| Black | 3.1% | 13.8% | 12.2% |
| Asian | 2.4% | 4.5% | 5.6% |
| Native American | 0.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.3% | 3.3% | 3.2% |
| Hispanic | 2.0% | 2.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Williamsville, NY | Linglestown, PA | United States |
| Married Population | 46.5% | 60.1% | 49.8% |
| Currently Married | 45.6% | 57.4% | 48.0% |
| Married but Separated | 0.8% | 2.7% | 1.8% |
| Single Population | 53.5% | 39.9% | 50.2% |
| Never Married | 30.2% | 25.1% | 33.8% |
| Divorced | 13.5% | 9.6% | 10.8% |
| Widowed | 9.8% | 5.2% | 5.6% |
| space5 | | | |
| Household Size | 2.09 | 2.43 | 2.60 |
| Households | 2,502 | 2,622 | 124,010,992 |
| Family Households | 1,426 | 1,858 | 80,755,759 |
| Married couple, w/children | 32.4% | 32.0% | 30.5% |
| Married couple, no children | 43.4% | 46.3% | 42.9% |
| Non Family Households | 1,076 | 764 | 43,255,233 |
| Single householder, w/children | 10.5% | 13.9% | 15.8% |
| Single householder, no children | 13.7% | 7.9% | 10.8% |