| | Briarcliff Manor, NY | Ossining, NY | United States |
| Population | 7,587 | 39,973 | 329,725,481 |
| Female Population | 50.5% | 48.1% | 50.5% |
| Male Population | 49.5% | 51.9% | 49.5% |
| Median Age | 49 | 44.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 7,863 | 37,695 | 309,327,143 |
| Population - 2000 | 7,696 | 36,534 | 285,036,114 |
| Population - 1990 | 7,070 | 34,124 | 251,960,433 |
| Pop. 2000 to Now | 4.5% | 2.8% | 15.6% |
| Pop. 1990 to Now | 13.7% | 10.0% | 30.8% |
| space4 | | | |
| Population Density | 1,277.7 | 3,459.1 | 93.4 |
| Land Area | 5.9 | 11.6 | 3,531,905.4 |
| Water Area | 0.9 | 4.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Briarcliff Manor, NY | Ossining, NY | United States |
| Age 0 to 4 | 3.7% | 4.5% | 5.9% |
| Age 5 to 9 | 5.5% | 4.5% | 6.1% |
| Age 10 to 14 | 7.8% | 5.9% | 6.6% |
| Age 15 to 17 | 4.6% | 4.5% | 3.9% |
| Age 18 to 20 | 3.2% | 2.8% | 4.0% |
| Age 21 to 24 | 5.3% | 3.7% | 5.2% |
| Age 25 to 34 | 7.6% | 12.3% | 13.8% |
| Age 35 to 44 | 9.2% | 12.7% | 12.9% |
| Age 45 to 54 | 12.5% | 15.9% | 12.6% |
| Age 55 to 59 | 10.3% | 7.7% | 6.7% |
| Age 60 to 64 | 8.3% | 7.0% | 6.3% |
| Age 65 to 74 | 11.9% | 10.4% | 9.6% |
| Age 75 to 84 | 5.1% | 4.5% | 4.5% |
| Age 85 and over | 5.0% | 3.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Briarcliff Manor, NY | Ossining, NY | United States |
| White | 78.6% | 49.3% | 59.4% |
| Black | 1.0% | 8.2% | 12.2% |
| Asian | 4.6% | 5.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.1% | 0.7% | 0.4% |
| Two or More Races | 4.0% | 2.9% | 3.2% |
| Hispanic | 10.7% | 33.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Briarcliff Manor, NY | Ossining, NY | United States |
| Married Population | 65.5% | 53.8% | 49.8% |
| Currently Married | 64.3% | 51.9% | 48.0% |
| Married but Separated | 1.2% | 1.9% | 1.8% |
| Single Population | 34.5% | 46.2% | 50.2% |
| Never Married | 23.8% | 33.4% | 33.8% |
| Divorced | 5.3% | 9.0% | 10.8% |
| Widowed | 5.4% | 3.7% | 5.6% |
| space5 | | | |
| Household Size | 2.68 | 2.55 | 2.60 |
| Households | 2,738 | 14,628 | 124,010,992 |
| Family Households | 2,219 | 10,310 | 80,755,759 |
| Married couple, w/children | 35.5% | 32.0% | 30.5% |
| Married couple, no children | 52.7% | 46.6% | 42.9% |
| Non Family Households | 519 | 4,318 | 43,255,233 |
| Single householder, w/children | 5.5% | 9.0% | 15.8% |
| Single householder, no children | 6.3% | 12.4% | 10.8% |