| | Springdale, PA | Plum, PA | United States |
| Population | 3,395 | 27,123 | 329,725,481 |
| Female Population | 52.6% | 50.8% | 50.5% |
| Male Population | 47.4% | 49.2% | 49.5% |
| Median Age | 48.1 | 44.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,405 | 27,137 | 309,327,143 |
| Population - 2000 | 3,828 | 26,940 | 285,036,114 |
| Population - 1990 | 3,992 | 25,609 | 251,960,433 |
| Pop. 2000 to Now | -14.7% | 0.2% | 15.6% |
| Pop. 1990 to Now | -18.2% | 5.4% | 30.8% |
| space4 | | | |
| Population Density | 3,634.9 | 948.9 | 93.4 |
| Land Area | 0.9 | 28.6 | 3,531,905.4 |
| Water Area | 0.2 | 0.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Springdale, PA | Plum, PA | United States |
| Age 0 to 4 | 5.0% | 4.7% | 5.9% |
| Age 5 to 9 | 4.6% | 6.8% | 6.1% |
| Age 10 to 14 | 4.5% | 5.4% | 6.6% |
| Age 15 to 17 | 4.4% | 4.5% | 3.9% |
| Age 18 to 20 | 0.4% | 2.8% | 4.0% |
| Age 21 to 24 | 3.6% | 3.5% | 5.2% |
| Age 25 to 34 | 12.9% | 10.7% | 13.8% |
| Age 35 to 44 | 11.3% | 12.6% | 12.9% |
| Age 45 to 54 | 12.2% | 13.0% | 12.6% |
| Age 55 to 59 | 8.6% | 8.0% | 6.7% |
| Age 60 to 64 | 10.0% | 8.1% | 6.3% |
| Age 65 to 74 | 15.6% | 10.8% | 9.6% |
| Age 75 to 84 | 4.8% | 5.2% | 4.5% |
| Age 85 and over | 1.9% | 3.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Springdale, PA | Plum, PA | United States |
| White | 94.8% | 91.2% | 59.4% |
| Black | 0.2% | 4.5% | 12.2% |
| Asian | 0.0% | 0.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.6% | 0.4% |
| Two or More Races | 2.1% | 2.2% | 3.2% |
| Hispanic | 2.5% | 0.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Springdale, PA | Plum, PA | United States |
| Married Population | 51.5% | 59.7% | 49.8% |
| Currently Married | 50.1% | 58.6% | 48.0% |
| Married but Separated | 1.3% | 1.1% | 1.8% |
| Single Population | 48.5% | 40.3% | 50.2% |
| Never Married | 27.0% | 26.4% | 33.8% |
| Divorced | 15.5% | 6.3% | 10.8% |
| Widowed | 6.0% | 7.6% | 5.6% |
| space5 | | | |
| Household Size | 2.16 | 2.50 | 2.60 |
| Households | 1,573 | 10,834 | 124,010,992 |
| Family Households | 966 | 7,776 | 80,755,759 |
| Married couple, w/children | 22.2% | 31.0% | 30.5% |
| Married couple, no children | 51.9% | 52.0% | 42.9% |
| Non Family Households | 607 | 3,058 | 43,255,233 |
| Single householder, w/children | 11.2% | 9.4% | 15.8% |
| Single householder, no children | 14.8% | 7.6% | 10.8% |