| PEOPLE | Bethpage | Keene | United States |
| Population | 16,429 | 23,409 | 308,035,306 |
| Pop. Density | 4,594 | 628 | 87 |
| Pop. Change | -1.60% | 3.86% | 8.07% |
| Median Age | 44.1 | 34 | 37.3 |
| Households | 5,875 | 9,052 | 116,716,292 |
| Household Size | 2.79 | 2.26 | 2.58 |
| Male Population | 47.23% | 46.90% | 49.27% |
| Female Population | 52.77% | 53.10% | 50.96% |
| Married Population | 55.41% | 38.30% | 47.02% |
| Single Population | 44.59% | 61.70% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.78% | 3.90% | 6.56% |
| Age 5 to 9 | 5.62% | 4.80% | 6.61% |
| Age 10 to 14 | 6.68% | 4.57% | 6.71% |
| Age 15 to 17 | 4.35% | 3.31% | 4.21% |
| Age 18 to 20 | 2.23% | 8.34% | 2.95% |
| Age 21 to 24 | 5.13% | 15.74% | 7.01% |
| Age 25 to 34 | 9.28% | 10.24% | 13.33% |
| Age 35 to 44 | 13.40% | 10.42% | 13.33% |
| Age 45 to 49 | 16.66% | 12.85% | 14.61% |
| Age 50 to 54 | 16.66% | 12.85% | 14.61% |
| Age 55 to 59 | 11.36% | 11.13% | 11.84% |
| Age 60 to 64 | 11.36% | 11.13% | 11.84% |
| Age 65 to 74 | 8.92% | 6.50% | 7.05% |
| Age 75 to 84 | 8.32% | 5.51% | 4.24% |
| Age 85 and over | 3.27% | 2.67% | 1.78% |
| RACE | | | |
| White | 90.79% | 95.32% | 72.41% |
| Black | 0.61% | 0.62% | 12.61% |
| Asian | 5.46% | 2.02% | 4.75% |
| American Indian | 0.15% | 0.18% | 0.95% |
| Other | 2.99% | 1.86% | 9.28% |
| Hispanic | 0.00% | 2.04% | 16.35% |
| Non-Hispanic | 100.00% | 97.96% | 83.65% |
| FAMILY | | | |
| Married, w/children | 35.31% | 26.60% | 30.42% |
| Married, no children | 45.54% | 46.48% | 42.46% |
| Single, w/children | 5.31% | 16.35% | 14.39% |
| Single, no children | 13.84% | 10.57% | 12.73% |
| Divorced | 5.29% | 11.30% | 10.62% |
| Separated | 2.74% | 3.25% | 4.97% |
| Widowed | 8.81% | 6.95% | 6.14% |
| Now Married | 54.83% | 37.86% | 46.32% |
| Never Married | 28.33% | 40.64% | 31.95% |
