| | Marlboro, NY | Quakertown, PA | United States |
| Population | 3,758 | 9,285 | 329,725,481 |
| Female Population | 55.3% | 51.5% | 50.5% |
| Male Population | 44.7% | 48.5% | 49.5% |
| Median Age | 50.2 | 37.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,011 | 8,986 | 309,327,143 |
| Population - 2000 | 2,339 | 8,931 | 285,036,114 |
| Population - 1990 | 2,200 | 8,982 | 251,960,433 |
| Pop. 2000 to Now | 53.7% | -2.0% | 15.6% |
| Pop. 1990 to Now | 63.5% | -2.5% | 30.8% |
| space4 | | | |
| Population Density | 843.4 | 4,569.4 | 93.4 |
| Land Area | 4.5 | 2.0 | 3,531,905.4 |
| Water Area | 0.6 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Marlboro, NY | Quakertown, PA | United States |
| Age 0 to 4 | 3.9% | 5.8% | 5.9% |
| Age 5 to 9 | 4.0% | 7.4% | 6.1% |
| Age 10 to 14 | 7.3% | 4.2% | 6.6% |
| Age 15 to 17 | 2.9% | 3.5% | 3.9% |
| Age 18 to 20 | 0.9% | 3.6% | 4.0% |
| Age 21 to 24 | 2.4% | 6.6% | 5.2% |
| Age 25 to 34 | 9.3% | 15.5% | 13.8% |
| Age 35 to 44 | 12.2% | 16.7% | 12.9% |
| Age 45 to 54 | 16.3% | 11.4% | 12.6% |
| Age 55 to 59 | 6.8% | 4.5% | 6.7% |
| Age 60 to 64 | 8.6% | 5.8% | 6.3% |
| Age 65 to 74 | 11.1% | 8.8% | 9.6% |
| Age 75 to 84 | 11.9% | 4.2% | 4.5% |
| Age 85 and over | 2.3% | 2.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Marlboro, NY | Quakertown, PA | United States |
| White | 80.6% | 75.9% | 59.4% |
| Black | 1.3% | 3.8% | 12.2% |
| Asian | 0.5% | 2.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 7.2% | 2.9% | 3.2% |
| Hispanic | 10.4% | 15.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Marlboro, NY | Quakertown, PA | United States |
| Married Population | 52.7% | 39.8% | 49.8% |
| Currently Married | 50.1% | 37.7% | 48.0% |
| Married but Separated | 2.6% | 2.1% | 1.8% |
| Single Population | 47.3% | 60.2% | 50.2% |
| Never Married | 21.8% | 43.4% | 33.8% |
| Divorced | 14.9% | 11.7% | 10.8% |
| Widowed | 10.5% | 5.1% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.58 | 2.60 |
| Households | 1,644 | 3,500 | 124,010,992 |
| Family Households | 1,061 | 2,116 | 80,755,759 |
| Married couple, w/children | 16.5% | 28.4% | 30.5% |
| Married couple, no children | 54.7% | 36.9% | 42.9% |
| Non Family Households | 583 | 1,384 | 43,255,233 |
| Single householder, w/children | 12.7% | 24.0% | 15.8% |
| Single householder, no children | 16.1% | 10.7% | 10.8% |