| PEOPLE | Greencastle | Frederick | United States |
| Population | 3,996 | 65,239 | 308,035,306 |
| Pop. Density | 2,517 | 2,967 | 87 |
| Pop. Change | 8.36% | 21.74% | 8.07% |
| Median Age | 39.7 | 34.7 | 37.3 |
| Households | 1,737 | 25,352 | 116,716,292 |
| Household Size | 2.3 | 2.51 | 2.58 |
| Male Population | 47.85% | 48.25% | 49.27% |
| Female Population | 52.15% | 51.75% | 50.96% |
| Married Population | 52.73% | 41.53% | 47.02% |
| Single Population | 47.27% | 58.47% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.68% | 7.67% | 6.56% |
| Age 5 to 9 | 6.11% | 6.57% | 6.61% |
| Age 10 to 14 | 6.98% | 5.77% | 6.71% |
| Age 15 to 17 | 3.73% | 3.70% | 4.21% |
| Age 18 to 20 | 2.00% | 2.59% | 2.95% |
| Age 21 to 24 | 5.58% | 7.23% | 7.01% |
| Age 25 to 34 | 12.59% | 17.00% | 13.33% |
| Age 35 to 44 | 13.84% | 14.94% | 13.33% |
| Age 45 to 49 | 13.54% | 13.80% | 14.61% |
| Age 50 to 54 | 13.54% | 13.80% | 14.61% |
| Age 55 to 59 | 10.69% | 9.91% | 11.84% |
| Age 60 to 64 | 10.69% | 9.91% | 11.84% |
| Age 65 to 74 | 8.96% | 5.03% | 7.05% |
| Age 75 to 84 | 6.68% | 3.65% | 4.24% |
| Age 85 and over | 2.63% | 2.14% | 1.78% |
| RACE | | | |
| White | 94.42% | 63.89% | 72.41% |
| Black | 2.53% | 18.61% | 12.61% |
| Asian | 1.18% | 5.82% | 4.75% |
| American Indian | 0.15% | 0.48% | 0.95% |
| Other | 1.73% | 11.19% | 9.28% |
| Hispanic | 9.33% | 2.39% | 16.35% |
| Non-Hispanic | 90.67% | 97.61% | 83.65% |
| FAMILY | | | |
| Married, w/children | 30.39% | 33.95% | 30.42% |
| Married, no children | 47.41% | 36.78% | 42.46% |
| Single, w/children | 15.38% | 16.27% | 14.39% |
| Single, no children | 6.82% | 12.99% | 12.73% |
| Divorced | 12.44% | 12.14% | 10.62% |
| Separated | 2.34% | 5.97% | 4.97% |
| Widowed | 9.70% | 5.52% | 6.14% |
| Now Married | 52.48% | 42.34% | 46.32% |
| Never Married | 23.04% | 34.02% | 31.95% |
