| | Newfield, NY | Lansdowne, PA | United States |
| Population | 5,175 | 11,007 | 329,725,481 |
| Female Population | 49.4% | 50.7% | 50.5% |
| Male Population | 50.6% | 49.3% | 49.5% |
| Median Age | 45.8 | 42.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,195 | 10,618 | 309,327,143 |
| Population - 2000 | 5,108 | 11,044 | 285,036,114 |
| Population - 1990 | 4,867 | 11,712 | 251,960,433 |
| Pop. 2000 to Now | -3.6% | -3.7% | 15.6% |
| Pop. 1990 to Now | 1.1% | -9.1% | 30.8% |
| space4 | | | |
| Population Density | 88.0 | 9,320.1 | 93.4 |
| Land Area | 58.8 | 1.2 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Newfield, NY | Lansdowne, PA | United States |
| Age 0 to 4 | 4.7% | 4.2% | 5.9% |
| Age 5 to 9 | 4.5% | 7.3% | 6.1% |
| Age 10 to 14 | 5.1% | 6.2% | 6.6% |
| Age 15 to 17 | 2.7% | 2.8% | 3.9% |
| Age 18 to 20 | 1.6% | 2.2% | 4.0% |
| Age 21 to 24 | 5.0% | 5.1% | 5.2% |
| Age 25 to 34 | 13.1% | 11.6% | 13.8% |
| Age 35 to 44 | 12.3% | 13.9% | 12.9% |
| Age 45 to 54 | 14.0% | 11.1% | 12.6% |
| Age 55 to 59 | 10.4% | 11.2% | 6.7% |
| Age 60 to 64 | 9.6% | 8.0% | 6.3% |
| Age 65 to 74 | 10.4% | 13.4% | 9.6% |
| Age 75 to 84 | 5.8% | 2.1% | 4.5% |
| Age 85 and over | 0.8% | 0.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Newfield, NY | Lansdowne, PA | United States |
| White | 98.8% | 39.9% | 59.4% |
| Black | 0.9% | 48.1% | 12.2% |
| Asian | 0.0% | 2.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.3% | 4.0% | 3.2% |
| Hispanic | 0.0% | 5.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Newfield, NY | Lansdowne, PA | United States |
| Married Population | 53.6% | 41.5% | 49.8% |
| Currently Married | 52.1% | 39.0% | 48.0% |
| Married but Separated | 1.5% | 2.5% | 1.8% |
| Single Population | 46.4% | 58.5% | 50.2% |
| Never Married | 27.8% | 39.0% | 33.8% |
| Divorced | 13.8% | 14.9% | 10.8% |
| Widowed | 4.8% | 4.6% | 5.6% |
| space5 | | | |
| Household Size | 2.17 | 2.29 | 2.60 |
| Households | 2,390 | 4,790 | 124,010,992 |
| Family Households | 1,496 | 2,625 | 80,755,759 |
| Married couple, w/children | 18.3% | 24.8% | 30.5% |
| Married couple, no children | 54.9% | 34.3% | 42.9% |
| Non Family Households | 894 | 2,165 | 43,255,233 |
| Single householder, w/children | 22.1% | 24.2% | 15.8% |
| Single householder, no children | 4.7% | 16.8% | 10.8% |