| PEOPLE | Selinsgrove | Allentown | United States |
| Population | 5,654 | 118,032 | 308,035,306 |
| Pop. Density | 3,087 | 6,727 | 87 |
| Pop. Change | 6.35% | 10.27% | 8.07% |
| Median Age | 23.7 | 32.9 | 37.3 |
| Households | 1,812 | 42,804 | 116,716,292 |
| Household Size | 2.15 | 2.64 | 2.58 |
| Male Population | 46.37% | 48.18% | 49.27% |
| Female Population | 53.63% | 51.82% | 50.96% |
| Married Population | 31.55% | 36.37% | 47.02% |
| Single Population | 68.45% | 63.63% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.01% | 7.91% | 6.56% |
| Age 5 to 9 | 3.87% | 7.13% | 6.61% |
| Age 10 to 14 | 3.66% | 6.89% | 6.71% |
| Age 15 to 17 | 2.58% | 4.28% | 4.21% |
| Age 18 to 20 | 16.02% | 3.71% | 2.95% |
| Age 21 to 24 | 22.94% | 8.55% | 7.01% |
| Age 25 to 34 | 9.00% | 14.51% | 13.33% |
| Age 35 to 44 | 8.22% | 12.41% | 13.33% |
| Age 45 to 49 | 8.30% | 13.03% | 14.61% |
| Age 50 to 54 | 8.30% | 13.03% | 14.61% |
| Age 55 to 59 | 7.43% | 9.69% | 11.84% |
| Age 60 to 64 | 7.43% | 9.69% | 11.84% |
| Age 65 to 74 | 5.50% | 5.53% | 7.05% |
| Age 75 to 84 | 5.38% | 4.18% | 4.24% |
| Age 85 and over | 3.08% | 2.17% | 1.78% |
| RACE | | | |
| White | 91.65% | 58.51% | 72.41% |
| Black | 3.36% | 12.55% | 12.61% |
| Asian | 1.22% | 2.15% | 4.75% |
| American Indian | 0.23% | 0.76% | 0.95% |
| Other | 3.54% | 26.03% | 9.28% |
| Hispanic | 0.53% | 48.17% | 16.35% |
| Non-Hispanic | 99.47% | 51.83% | 83.65% |
| FAMILY | | | |
| Married, w/children | 23.87% | 22.69% | 30.42% |
| Married, no children | 44.09% | 33.47% | 42.46% |
| Single, w/children | 21.51% | 27.27% | 14.39% |
| Single, no children | 10.54% | 16.57% | 12.73% |
| Divorced | 6.53% | 12.23% | 10.62% |
| Separated | 4.05% | 7.71% | 4.97% |
| Widowed | 6.40% | 7.48% | 6.14% |
| Now Married | 30.95% | 36.22% | 46.32% |
| Never Married | 52.08% | 36.37% | 31.95% |
