| | Levittown, NY | Deer Park, NY | United States |
| Population | 52,540 | 26,803 | 329,725,481 |
| Female Population | 51.0% | 51.6% | 50.5% |
| Male Population | 49.1% | 48.5% | 49.5% |
| Median Age | 42.2 | 42.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 53,479 | 28,292 | 309,327,143 |
| Population - 2000 | 53,067 | 28,316 | 285,036,114 |
| Population - 1990 | 53,286 | 28,840 | 251,960,433 |
| Pop. 2000 to Now | -2.6% | -3.5% | 15.6% |
| Pop. 1990 to Now | -3.0% | -5.3% | 30.8% |
| space4 | | | |
| Population Density | 7,712.9 | 4,345.5 | 93.4 |
| Land Area | 6.8 | 6.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Levittown, NY | Deer Park, NY | United States |
| Age 0 to 4 | 5.1% | 4.5% | 5.9% |
| Age 5 to 9 | 4.8% | 5.1% | 6.1% |
| Age 10 to 14 | 5.4% | 5.8% | 6.6% |
| Age 15 to 17 | 3.5% | 3.8% | 3.9% |
| Age 18 to 20 | 3.6% | 3.5% | 4.0% |
| Age 21 to 24 | 5.9% | 4.5% | 5.2% |
| Age 25 to 34 | 12.4% | 13.4% | 13.8% |
| Age 35 to 44 | 12.4% | 12.9% | 12.9% |
| Age 45 to 54 | 13.5% | 16.4% | 12.6% |
| Age 55 to 59 | 9.6% | 7.3% | 6.7% |
| Age 60 to 64 | 7.4% | 7.0% | 6.3% |
| Age 65 to 74 | 10.5% | 8.8% | 9.6% |
| Age 75 to 84 | 4.2% | 4.9% | 4.5% |
| Age 85 and over | 1.7% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Levittown, NY | Deer Park, NY | United States |
| White | 71.8% | 58.9% | 59.4% |
| Black | 1.2% | 9.8% | 12.2% |
| Asian | 8.7% | 10.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.1% | 0.9% | 0.4% |
| Two or More Races | 1.4% | 3.4% | 3.2% |
| Hispanic | 15.9% | 16.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Levittown, NY | Deer Park, NY | United States |
| Married Population | 56.0% | 51.3% | 49.8% |
| Currently Married | 54.6% | 50.3% | 48.0% |
| Married but Separated | 1.4% | 1.0% | 1.8% |
| Single Population | 44.0% | 48.7% | 50.2% |
| Never Married | 31.7% | 33.8% | 33.8% |
| Divorced | 6.5% | 8.9% | 10.8% |
| Widowed | 5.8% | 6.0% | 5.6% |
| space5 | | | |
| Household Size | 3.07 | 3.07 | 2.60 |
| Households | 17,072 | 8,701 | 124,010,992 |
| Family Households | 13,901 | 6,160 | 80,755,759 |
| Married couple, w/children | 33.0% | 36.7% | 30.5% |
| Married couple, no children | 47.5% | 42.6% | 42.9% |
| Non Family Households | 3,171 | 2,541 | 43,255,233 |
| Single householder, w/children | 6.3% | 7.4% | 15.8% |
| Single householder, no children | 13.2% | 13.2% | 10.8% |