| PEOPLE | Yardley | Flemington | United States |
| Population | 2,434 | 4,581 | 308,035,306 |
| Pop. Density | 2,608 | 4,252 | 87 |
| Pop. Change | -1.61% | 10.02% | 8.07% |
| Median Age | 42.5 | 35.4 | 37.3 |
| Households | 1,143 | 1,815 | 116,716,292 |
| Household Size | 2.13 | 2.44 | 2.58 |
| Male Population | 47.82% | 51.34% | 49.27% |
| Female Population | 52.18% | 48.66% | 50.96% |
| Married Population | 46.17% | 35.91% | 47.02% |
| Single Population | 53.83% | 64.09% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.38% | 7.86% | 6.56% |
| Age 5 to 9 | 4.56% | 6.24% | 6.61% |
| Age 10 to 14 | 5.67% | 4.85% | 6.71% |
| Age 15 to 17 | 3.12% | 3.36% | 4.21% |
| Age 18 to 20 | 1.89% | 2.16% | 2.95% |
| Age 21 to 24 | 3.86% | 6.96% | 7.01% |
| Age 25 to 34 | 14.30% | 17.92% | 13.33% |
| Age 35 to 44 | 15.45% | 16.00% | 13.33% |
| Age 45 to 49 | 18.00% | 14.21% | 14.61% |
| Age 50 to 54 | 18.00% | 14.21% | 14.61% |
| Age 55 to 59 | 14.09% | 10.13% | 11.84% |
| Age 60 to 64 | 14.09% | 10.13% | 11.84% |
| Age 65 to 74 | 7.11% | 4.58% | 7.05% |
| Age 75 to 84 | 5.09% | 3.78% | 4.24% |
| Age 85 and over | 1.48% | 1.94% | 1.78% |
| RACE | | | |
| White | 91.37% | 78.48% | 72.41% |
| Black | 3.49% | 3.93% | 12.61% |
| Asian | 2.63% | 5.81% | 4.75% |
| American Indian | 0.04% | 0.31% | 0.95% |
| Other | 2.47% | 11.48% | 9.28% |
| Hispanic | 1.19% | 0.49% | 16.35% |
| Non-Hispanic | 98.81% | 99.51% | 83.65% |
| FAMILY | | | |
| Married, w/children | 31.01% | 33.50% | 30.42% |
| Married, no children | 46.51% | 34.90% | 42.46% |
| Single, w/children | 10.39% | 18.36% | 14.39% |
| Single, no children | 12.09% | 13.24% | 12.73% |
| Divorced | 15.67% | 11.99% | 10.62% |
| Separated | 2.35% | 2.49% | 4.97% |
| Widowed | 6.78% | 8.05% | 6.14% |
| Now Married | 45.99% | 35.37% | 46.32% |
| Never Married | 29.22% | 42.10% | 31.95% |
