| | Ridley Park, PA | Brookhaven, PA | United States |
| Population | 7,131 | 8,243 | 329,725,481 |
| Female Population | 51.2% | 46.3% | 50.5% |
| Male Population | 48.8% | 53.7% | 49.5% |
| Median Age | 40.7 | 44.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 7,019 | 8,023 | 309,327,143 |
| Population - 2000 | 7,196 | 7,985 | 285,036,114 |
| Population - 1990 | 7,592 | 8,567 | 251,960,433 |
| Pop. 2000 to Now | -1.8% | 0.9% | 15.6% |
| Pop. 1990 to Now | -6.9% | -6.0% | 30.8% |
| space4 | | | |
| Population Density | 6,608.9 | 4,826.1 | 93.4 |
| Land Area | 1.1 | 1.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ridley Park, PA | Brookhaven, PA | United States |
| Age 0 to 4 | 5.7% | 6.6% | 5.9% |
| Age 5 to 9 | 3.3% | 4.1% | 6.1% |
| Age 10 to 14 | 5.1% | 7.4% | 6.6% |
| Age 15 to 17 | 5.1% | 2.3% | 3.9% |
| Age 18 to 20 | 2.2% | 2.2% | 4.0% |
| Age 21 to 24 | 4.8% | 3.2% | 5.2% |
| Age 25 to 34 | 13.2% | 14.6% | 13.8% |
| Age 35 to 44 | 13.7% | 10.0% | 12.9% |
| Age 45 to 54 | 14.6% | 13.3% | 12.6% |
| Age 55 to 59 | 7.0% | 11.3% | 6.7% |
| Age 60 to 64 | 9.6% | 7.3% | 6.3% |
| Age 65 to 74 | 7.9% | 9.1% | 9.6% |
| Age 75 to 84 | 4.2% | 5.1% | 4.5% |
| Age 85 and over | 3.6% | 3.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ridley Park, PA | Brookhaven, PA | United States |
| White | 87.2% | 88.0% | 59.4% |
| Black | 5.1% | 7.0% | 12.2% |
| Asian | 0.5% | 0.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 2.3% | 2.8% | 3.2% |
| Hispanic | 4.5% | 1.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ridley Park, PA | Brookhaven, PA | United States |
| Married Population | 49.4% | 47.3% | 49.8% |
| Currently Married | 47.9% | 45.6% | 48.0% |
| Married but Separated | 1.4% | 1.7% | 1.8% |
| Single Population | 50.6% | 52.7% | 50.2% |
| Never Married | 34.7% | 32.0% | 33.8% |
| Divorced | 9.7% | 13.6% | 10.8% |
| Widowed | 6.3% | 7.1% | 5.6% |
| space5 | | | |
| Household Size | 2.40 | 2.27 | 2.60 |
| Households | 2,943 | 3,617 | 124,010,992 |
| Family Households | 1,856 | 2,196 | 80,755,759 |
| Married couple, w/children | 33.2% | 29.3% | 30.5% |
| Married couple, no children | 39.4% | 39.6% | 42.9% |
| Non Family Households | 1,087 | 1,421 | 43,255,233 |
| Single householder, w/children | 12.8% | 24.4% | 15.8% |
| Single householder, no children | 14.6% | 6.7% | 10.8% |