| PEOPLE | Armonk | Westport | United States |
| Population | 4,330 | 26,391 | 308,035,306 |
| Pop. Density | 726 | 1,322 | 87 |
| Pop. Change | 15.03% | 2.38% | 8.07% |
| Median Age | 40.8 | 44.6 | 37.3 |
| Households | 1,413 | 9,573 | 116,716,292 |
| Household Size | 3.04 | 2.73 | 2.58 |
| Male Population | 49.24% | 48.17% | 49.27% |
| Female Population | 50.76% | 51.83% | 50.96% |
| Married Population | 65.73% | 63.95% | 47.02% |
| Single Population | 34.27% | 36.05% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.17% | 5.49% | 6.56% |
| Age 5 to 9 | 10.25% | 8.85% | 6.61% |
| Age 10 to 14 | 10.18% | 9.58% | 6.71% |
| Age 15 to 17 | 5.89% | 5.89% | 4.21% |
| Age 18 to 20 | 1.55% | 1.38% | 2.95% |
| Age 21 to 24 | 2.98% | 2.29% | 7.01% |
| Age 25 to 34 | 5.15% | 3.65% | 13.33% |
| Age 35 to 44 | 14.85% | 13.52% | 13.33% |
| Age 45 to 49 | 18.59% | 19.91% | 14.61% |
| Age 50 to 54 | 18.59% | 19.91% | 14.61% |
| Age 55 to 59 | 12.36% | 13.43% | 11.84% |
| Age 60 to 64 | 12.36% | 13.43% | 11.84% |
| Age 65 to 74 | 6.74% | 8.25% | 7.05% |
| Age 75 to 84 | 4.02% | 5.38% | 4.24% |
| Age 85 and over | 1.27% | 2.38% | 1.78% |
| RACE | | | |
| White | 92.68% | 92.57% | 72.41% |
| Black | 0.69% | 1.16% | 12.61% |
| Asian | 4.71% | 3.97% | 4.75% |
| American Indian | 0.02% | 0.06% | 0.95% |
| Other | 1.89% | 2.25% | 9.28% |
| Hispanic | 0.00% | 12.70% | 16.35% |
| Non-Hispanic | 100.00% | 87.30% | 83.65% |
| FAMILY | | | |
| Married, w/children | 50.63% | 47.10% | 30.42% |
| Married, no children | 37.38% | 40.11% | 42.46% |
| Single, w/children | 6.24% | 7.38% | 14.39% |
| Single, no children | 5.74% | 5.41% | 12.73% |
| Divorced | 5.34% | 8.81% | 10.62% |
| Separated | 1.98% | 2.88% | 4.97% |
| Widowed | 3.10% | 5.48% | 6.14% |
| Now Married | 65.52% | 64.15% | 46.32% |
| Never Married | 24.05% | 18.69% | 31.95% |
