| | Newtown township (Delaware County), PA | Carmel Valley Village, CA | United States |
| Population | 14,724 | 4,400 | 329,725,481 |
| Female Population | 51.6% | 55.3% | 50.5% |
| Male Population | 48.4% | 44.7% | 49.5% |
| Median Age | 43.2 | 58.6 | 38.4 |
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| Population - 2010 | 12,218 | 4,671 | 309,327,143 |
| Population - 2000 | 11,700 | 4,700 | 285,036,114 |
| Population - 1990 | 11,366 | 4,407 | 251,960,433 |
| Pop. 2000 to Now | 21.3% | -14.5% | 15.6% |
| Pop. 1990 to Now | 24.9% | -8.8% | 30.8% |
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| Population Density | 1,469.8 | 231.8 | 93.4 |
| Land Area | 10.0 | 19.0 | 3,531,905.4 |
| Water Area | 0.1 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Newtown township (Delaware County), PA | Carmel Valley Village, CA | United States |
| Age 0 to 4 | 8.3% | 1.0% | 5.9% |
| Age 5 to 9 | 6.5% | 4.3% | 6.1% |
| Age 10 to 14 | 5.3% | 5.5% | 6.6% |
| Age 15 to 17 | 4.7% | 3.5% | 3.9% |
| Age 18 to 20 | 1.4% | 4.5% | 4.0% |
| Age 21 to 24 | 3.0% | 1.7% | 5.2% |
| Age 25 to 34 | 8.9% | 1.8% | 13.8% |
| Age 35 to 44 | 14.0% | 13.0% | 12.9% |
| Age 45 to 54 | 10.3% | 8.2% | 12.6% |
| Age 55 to 59 | 7.3% | 10.1% | 6.7% |
| Age 60 to 64 | 7.5% | 11.3% | 6.3% |
| Age 65 to 74 | 12.2% | 28.0% | 9.6% |
| Age 75 to 84 | 5.7% | 5.4% | 4.5% |
| Age 85 and over | 5.0% | 1.9% | 1.9% |
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| Race | | | |
| | Newtown township (Delaware County), PA | Carmel Valley Village, CA | United States |
| White | 91.6% | 87.2% | 59.4% |
| Black | 1.3% | 1.0% | 12.2% |
| Asian | 2.5% | 0.3% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.2% | 3.0% | 3.2% |
| Hispanic | 2.4% | 8.5% | 18.4% |
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| Marriage & Family | | | |
| | Newtown township (Delaware County), PA | Carmel Valley Village, CA | United States |
| Married Population | 61.8% | 56.0% | 49.8% |
| Currently Married | 61.1% | 54.2% | 48.0% |
| Married but Separated | 0.7% | 1.8% | 1.8% |
| Single Population | 38.2% | 44.0% | 50.2% |
| Never Married | 22.7% | 19.7% | 33.8% |
| Divorced | 9.0% | 16.0% | 10.8% |
| Widowed | 6.5% | 8.3% | 5.6% |
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| Household Size | 2.47 | 2.39 | 2.60 |
| Households | 5,899 | 1,830 | 124,010,992 |
| Family Households | 3,943 | 1,212 | 80,755,759 |
| Married couple, w/children | 40.0% | 21.9% | 30.5% |
| Married couple, no children | 48.7% | 66.1% | 42.9% |
| Non Family Households | 1,956 | 618 | 43,255,233 |
| Single householder, w/children | 4.6% | 8.7% | 15.8% |
| Single householder, no children | 6.8% | 3.3% | 10.8% |