| | Centerport, NY | Bayville, NY | United States |
| Population | 6,028 | 6,780 | 329,725,481 |
| Female Population | 50.6% | 48.6% | 50.5% |
| Male Population | 49.4% | 51.4% | 49.5% |
| Median Age | 48.1 | 53 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,610 | 6,676 | 309,327,143 |
| Population - 2000 | 5,446 | 7,135 | 285,036,114 |
| Population - 1990 | 5,333 | 7,193 | 251,960,433 |
| Pop. 2000 to Now | -2.4% | -6.2% | 15.6% |
| Pop. 1990 to Now | -0.3% | -6.9% | 30.8% |
| space4 | | | |
| Population Density | 2,865.0 | 4,675.9 | 93.4 |
| Land Area | 2.1 | 1.5 | 3,531,905.4 |
| Water Area | 0.2 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Centerport, NY | Bayville, NY | United States |
| Age 0 to 4 | 5.7% | 2.1% | 5.9% |
| Age 5 to 9 | 3.7% | 4.8% | 6.1% |
| Age 10 to 14 | 5.4% | 4.2% | 6.6% |
| Age 15 to 17 | 7.7% | 4.5% | 3.9% |
| Age 18 to 20 | 2.6% | 3.3% | 4.0% |
| Age 21 to 24 | 2.2% | 4.1% | 5.2% |
| Age 25 to 34 | 7.3% | 6.2% | 13.8% |
| Age 35 to 44 | 11.6% | 9.0% | 12.9% |
| Age 45 to 54 | 17.0% | 17.6% | 12.6% |
| Age 55 to 59 | 11.3% | 11.0% | 6.7% |
| Age 60 to 64 | 7.7% | 10.0% | 6.3% |
| Age 65 to 74 | 10.1% | 12.1% | 9.6% |
| Age 75 to 84 | 5.6% | 8.0% | 4.5% |
| Age 85 and over | 2.1% | 3.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Centerport, NY | Bayville, NY | United States |
| White | 85.6% | 92.3% | 59.4% |
| Black | 0.4% | 0.3% | 12.2% |
| Asian | 3.9% | 0.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 4.0% | 0.1% | 0.4% |
| Two or More Races | 0.8% | 2.1% | 3.2% |
| Hispanic | 5.3% | 5.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Centerport, NY | Bayville, NY | United States |
| Married Population | 61.9% | 59.8% | 49.8% |
| Currently Married | 61.0% | 58.8% | 48.0% |
| Married but Separated | 0.9% | 1.0% | 1.8% |
| Single Population | 38.1% | 40.2% | 50.2% |
| Never Married | 26.4% | 27.3% | 33.8% |
| Divorced | 7.7% | 6.7% | 10.8% |
| Widowed | 4.1% | 6.2% | 5.6% |
| space5 | | | |
| Household Size | 2.78 | 2.46 | 2.60 |
| Households | 2,168 | 2,732 | 124,010,992 |
| Family Households | 1,692 | 1,966 | 80,755,759 |
| Married couple, w/children | 34.8% | 27.2% | 30.5% |
| Married couple, no children | 54.3% | 59.5% | 42.9% |
| Non Family Households | 476 | 766 | 43,255,233 |
| Single householder, w/children | 5.9% | 3.1% | 15.8% |
| Single householder, no children | 5.0% | 10.3% | 10.8% |