| PEOPLE | Greenwich | New York | United States |
| Population | 61,171 | 8,175,133 | 308,035,306 |
| Pop. Density | 1,285 | 27,012 | 87 |
| Pop. Change | 0.11% | 1.98% | 8.07% |
| Median Age | 42.7 | 35.5 | 37.3 |
| Households | 23,076 | 3,109,784 | 116,716,292 |
| Household Size | 2.62 | 2.57 | 2.58 |
| Male Population | 47.60% | 47.49% | 49.27% |
| Female Population | 52.40% | 52.51% | 50.96% |
| Married Population | 57.43% | 34.98% | 47.02% |
| Single Population | 42.57% | 65.02% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.08% | 6.33% | 6.56% |
| Age 5 to 9 | 7.67% | 5.79% | 6.61% |
| Age 10 to 14 | 8.13% | 5.73% | 6.71% |
| Age 15 to 17 | 4.83% | 3.78% | 4.21% |
| Age 18 to 20 | 1.66% | 2.77% | 2.95% |
| Age 21 to 24 | 3.12% | 7.86% | 7.01% |
| Age 25 to 34 | 8.03% | 17.03% | 13.33% |
| Age 35 to 44 | 14.21% | 14.12% | 13.33% |
| Age 45 to 49 | 17.21% | 13.55% | 14.61% |
| Age 50 to 54 | 17.21% | 13.55% | 14.61% |
| Age 55 to 59 | 12.61% | 10.89% | 11.84% |
| Age 60 to 64 | 12.61% | 10.89% | 11.84% |
| Age 65 to 74 | 8.12% | 6.50% | 7.05% |
| Age 75 to 84 | 5.49% | 3.92% | 4.24% |
| Age 85 and over | 2.85% | 1.73% | 1.78% |
| RACE | | | |
| White | 86.73% | 44.00% | 72.41% |
| Black | 2.15% | 25.55% | 12.61% |
| Asian | 6.60% | 12.70% | 4.75% |
| American Indian | 0.14% | 0.70% | 0.95% |
| Other | 4.38% | 17.04% | 9.28% |
| Hispanic | 1.19% | 5.26% | 16.35% |
| Non-Hispanic | 98.81% | 94.74% | 83.65% |
| FAMILY | | | |
| Married, w/children | 42.34% | 26.64% | 30.42% |
| Married, no children | 40.66% | 32.69% | 42.46% |
| Single, w/children | 8.15% | 18.22% | 14.39% |
| Single, no children | 8.84% | 22.44% | 12.73% |
| Divorced | 8.02% | 8.15% | 10.62% |
| Separated | 3.29% | 9.28% | 4.97% |
| Widowed | 6.17% | 6.39% | 6.14% |
| Now Married | 57.33% | 34.58% | 46.32% |
| Never Married | 25.19% | 41.61% | 31.95% |
