| | Grapeville, PA | Youngwood, PA | United States |
| Population | 355 | 2,974 | 329,725,481 |
| Female Population | 61.1% | 54.9% | 50.5% |
| Male Population | 38.9% | 45.1% | 49.5% |
| Median Age | 61.9 | 44.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 490 | 3,047 | 309,327,143 |
| Population - 2000 | 676 | 4,138 | 285,036,114 |
| Population - 1990 | 595 | 3,372 | 251,960,433 |
| Pop. 2000 to Now | -34.3% | -31.7% | 15.6% |
| Pop. 1990 to Now | -25.4% | -16.1% | 30.8% |
| space4 | | | |
| Population Density | 2,795.3 | 1,550.6 | 93.4 |
| Land Area | 0.1 | 1.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Grapeville, PA | Youngwood, PA | United States |
| Age 0 to 4 | 0.0% | 3.8% | 5.9% |
| Age 5 to 9 | 0.0% | 6.4% | 6.1% |
| Age 10 to 14 | 0.0% | 7.7% | 6.6% |
| Age 15 to 17 | 0.0% | 2.7% | 3.9% |
| Age 18 to 20 | 3.9% | 2.5% | 4.0% |
| Age 21 to 24 | 2.5% | 4.0% | 5.2% |
| Age 25 to 34 | 12.7% | 11.3% | 13.8% |
| Age 35 to 44 | 0.0% | 12.2% | 12.9% |
| Age 45 to 54 | 8.7% | 15.9% | 12.6% |
| Age 55 to 59 | 0.0% | 8.8% | 6.7% |
| Age 60 to 64 | 45.1% | 5.6% | 6.3% |
| Age 65 to 74 | 21.7% | 9.5% | 9.6% |
| Age 75 to 84 | 3.4% | 8.7% | 4.5% |
| Age 85 and over | 2.0% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Grapeville, PA | Youngwood, PA | United States |
| White | 96.6% | 96.1% | 59.4% |
| Black | 0.0% | 0.8% | 12.2% |
| Asian | 3.4% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.0% | 0.4% |
| Two or More Races | 0.0% | 2.1% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Grapeville, PA | Youngwood, PA | United States |
| Married Population | 23.7% | 54.8% | 49.8% |
| Currently Married | 23.7% | 52.4% | 48.0% |
| Married but Separated | 0.0% | 2.4% | 1.8% |
| Single Population | 76.3% | 45.2% | 50.2% |
| Never Married | 29.6% | 24.7% | 33.8% |
| Divorced | 30.7% | 9.8% | 10.8% |
| Widowed | 16.1% | 10.7% | 5.6% |
| space5 | | | |
| Household Size | 1.61 | 2.23 | 2.60 |
| Households | 220 | 1,313 | 124,010,992 |
| Family Households | 47 | 800 | 80,755,759 |
| Married couple, w/children | 0.0% | 32.9% | 30.5% |
| Married couple, no children | 85.1% | 46.4% | 42.9% |
| Non Family Households | 173 | 513 | 43,255,233 |
| Single householder, w/children | 0.0% | 11.1% | 15.8% |
| Single householder, no children | 14.9% | 9.6% | 10.8% |