| | New Cumberland, PA | Wildwood, NJ | United States |
| Population | 7,481 | 5,113 | 329,725,481 |
| Female Population | 49.5% | 53.7% | 50.5% |
| Male Population | 50.5% | 46.4% | 49.5% |
| Median Age | 46.1 | 45.6 | 38.4 |
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| Population - 2010 | 7,284 | 5,322 | 309,327,143 |
| Population - 2000 | 7,349 | 5,436 | 285,036,114 |
| Population - 1990 | 7,665 | 4,484 | 251,960,433 |
| Pop. 2000 to Now | -0.7% | -9.6% | 15.6% |
| Pop. 1990 to Now | -4.8% | 9.6% | 30.8% |
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| Population Density | 4,466.3 | 3,318.0 | 93.4 |
| Land Area | 1.7 | 1.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | New Cumberland, PA | Wildwood, NJ | United States |
| Age 0 to 4 | 3.9% | 4.0% | 5.9% |
| Age 5 to 9 | 5.1% | 6.1% | 6.1% |
| Age 10 to 14 | 3.9% | 6.8% | 6.6% |
| Age 15 to 17 | 2.6% | 2.6% | 3.9% |
| Age 18 to 20 | 2.6% | 3.6% | 4.0% |
| Age 21 to 24 | 4.3% | 5.3% | 5.2% |
| Age 25 to 34 | 15.1% | 9.0% | 13.8% |
| Age 35 to 44 | 12.0% | 11.8% | 12.9% |
| Age 45 to 54 | 15.3% | 14.4% | 12.6% |
| Age 55 to 59 | 10.2% | 6.6% | 6.7% |
| Age 60 to 64 | 7.7% | 14.5% | 6.3% |
| Age 65 to 74 | 13.1% | 9.4% | 9.6% |
| Age 75 to 84 | 2.1% | 5.2% | 4.5% |
| Age 85 and over | 2.0% | 0.7% | 1.9% |
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| Race | | | |
| | New Cumberland, PA | Wildwood, NJ | United States |
| White | 88.7% | 65.7% | 59.4% |
| Black | 0.9% | 8.5% | 12.2% |
| Asian | 1.3% | 0.5% | 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 | 3.2% | 2.0% | 3.2% |
| Hispanic | 5.8% | 23.2% | 18.4% |
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| Marriage & Family | | | |
| | New Cumberland, PA | Wildwood, NJ | United States |
| Married Population | 53.0% | 54.7% | 49.8% |
| Currently Married | 48.4% | 52.0% | 48.0% |
| Married but Separated | 4.5% | 2.7% | 1.8% |
| Single Population | 47.0% | 45.3% | 50.2% |
| Never Married | 31.4% | 31.1% | 33.8% |
| Divorced | 11.1% | 8.8% | 10.8% |
| Widowed | 4.5% | 5.5% | 5.6% |
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| Household Size | 2.04 | 2.23 | 2.60 |
| Households | 3,664 | 2,291 | 124,010,992 |
| Family Households | 2,086 | 1,447 | 80,755,759 |
| Married couple, w/children | 20.4% | 22.9% | 30.5% |
| Married couple, no children | 57.0% | 47.7% | 42.9% |
| Non Family Households | 1,578 | 844 | 43,255,233 |
| Single householder, w/children | 11.5% | 17.8% | 15.8% |
| Single householder, no children | 11.2% | 11.7% | 10.8% |