| | Long Beach, NY | Lido Beach, NY | United States |
| Population | 34,820 | 2,886 | 329,725,481 |
| Female Population | 49.1% | 48.9% | 50.5% |
| Male Population | 50.9% | 51.1% | 49.5% |
| Median Age | 45.1 | 51.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 33,395 | 2,611 | 309,327,143 |
| Population - 2000 | 35,462 | 2,825 | 285,036,114 |
| Population - 1990 | 33,510 | 2,786 | 251,960,433 |
| Pop. 2000 to Now | -6.1% | 8.5% | 15.6% |
| Pop. 1990 to Now | -0.6% | 10.0% | 30.8% |
| space4 | | | |
| Population Density | 15,698.8 | 1,659.6 | 93.4 |
| Land Area | 2.2 | 1.7 | 3,531,905.4 |
| Water Area | 1.7 | 2.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Long Beach, NY | Lido Beach, NY | United States |
| Age 0 to 4 | 4.6% | 2.2% | 5.9% |
| Age 5 to 9 | 3.7% | 4.3% | 6.1% |
| Age 10 to 14 | 3.5% | 9.4% | 6.6% |
| Age 15 to 17 | 2.6% | 3.0% | 3.9% |
| Age 18 to 20 | 2.6% | 3.3% | 4.0% |
| Age 21 to 24 | 4.5% | 4.3% | 5.2% |
| Age 25 to 34 | 17.8% | 5.0% | 13.8% |
| Age 35 to 44 | 10.6% | 9.7% | 12.9% |
| Age 45 to 54 | 12.7% | 15.0% | 12.6% |
| Age 55 to 59 | 9.5% | 5.0% | 6.7% |
| Age 60 to 64 | 9.1% | 12.2% | 6.3% |
| Age 65 to 74 | 10.6% | 14.6% | 9.6% |
| Age 75 to 84 | 5.3% | 9.1% | 4.5% |
| Age 85 and over | 2.9% | 3.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Long Beach, NY | Lido Beach, NY | United States |
| White | 74.1% | 86.2% | 59.4% |
| Black | 5.5% | 0.2% | 12.2% |
| Asian | 4.5% | 1.3% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 2.0% | 1.3% | 3.2% |
| Hispanic | 13.3% | 10.9% | 18.4% |
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| Marriage & Family | | | |
| | Long Beach, NY | Lido Beach, NY | United States |
| Married Population | 46.6% | 56.7% | 49.8% |
| Currently Married | 43.7% | 55.8% | 48.0% |
| Married but Separated | 2.9% | 0.9% | 1.8% |
| Single Population | 53.4% | 43.3% | 50.2% |
| Never Married | 36.5% | 24.4% | 33.8% |
| Divorced | 11.0% | 13.8% | 10.8% |
| Widowed | 6.0% | 5.1% | 5.6% |
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| Household Size | 2.40 | 2.44 | 2.60 |
| Households | 14,053 | 1,172 | 124,010,992 |
| Family Households | 7,936 | 704 | 80,755,759 |
| Married couple, w/children | 25.0% | 28.7% | 30.5% |
| Married couple, no children | 50.1% | 60.9% | 42.9% |
| Non Family Households | 6,117 | 468 | 43,255,233 |
| Single householder, w/children | 11.6% | 3.3% | 15.8% |
| Single householder, no children | 13.3% | 7.1% | 10.8% |