| PEOPLE | Plainfield | Lafayette | United States |
| Population | 49,808 | 67,140 | 308,035,306 |
| Pop. Density | 8,270 | 2,420 | 87 |
| Pop. Change | 3.53% | 9.64% | 8.07% |
| Median Age | 33.4 | 32.1 | 37.3 |
| Households | 15,180 | 28,545 | 116,716,292 |
| Household Size | 3.23 | 2.3 | 2.58 |
| Male Population | 50.32% | 48.70% | 49.27% |
| Female Population | 49.68% | 51.30% | 50.96% |
| Married Population | 27.77% | 41.89% | 47.02% |
| Single Population | 72.23% | 58.11% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.33% | 7.96% | 6.56% |
| Age 5 to 9 | 6.90% | 6.54% | 6.61% |
| Age 10 to 14 | 6.51% | 5.63% | 6.71% |
| Age 15 to 17 | 4.07% | 3.68% | 4.21% |
| Age 18 to 20 | 2.78% | 2.73% | 2.95% |
| Age 21 to 24 | 7.74% | 10.25% | 7.01% |
| Age 25 to 34 | 16.08% | 17.72% | 13.33% |
| Age 35 to 44 | 14.64% | 12.03% | 13.33% |
| Age 45 to 49 | 13.95% | 12.08% | 14.61% |
| Age 50 to 54 | 13.95% | 12.08% | 14.61% |
| Age 55 to 59 | 9.52% | 10.07% | 11.84% |
| Age 60 to 64 | 9.52% | 10.07% | 11.84% |
| Age 65 to 74 | 5.47% | 5.76% | 7.05% |
| Age 75 to 84 | 2.80% | 3.78% | 4.24% |
| Age 85 and over | 1.19% | 1.77% | 1.78% |
| RACE | | | |
| White | 23.54% | 83.57% | 72.41% |
| Black | 50.20% | 6.20% | 12.61% |
| Asian | 0.95% | 1.38% | 4.75% |
| American Indian | 0.91% | 0.36% | 0.95% |
| Other | 24.39% | 8.49% | 9.28% |
| Hispanic | 19.64% | 0.00% | 16.35% |
| Non-Hispanic | 80.36% | 100.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 25.94% | 26.30% | 30.42% |
| Married, no children | 26.93% | 39.73% | 42.46% |
| Single, w/children | 23.21% | 21.65% | 14.39% |
| Single, no children | 23.92% | 12.32% | 12.73% |
| Divorced | 9.71% | 14.30% | 10.62% |
| Separated | 10.45% | 2.05% | 4.97% |
| Widowed | 5.09% | 5.87% | 6.14% |
| Now Married | 28.14% | 42.15% | 46.32% |
| Never Married | 46.61% | 35.63% | 31.95% |
