| | Philadelphia, TN | Hopatcong, NJ | United States |
| Population | 923 | 14,395 | 329,725,481 |
| Female Population | 53.5% | 50.2% | 50.5% |
| Male Population | 46.5% | 49.8% | 49.5% |
| Median Age | 32.2 | 41.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 653 | 15,124 | 309,327,143 |
| Population - 2000 | 533 | 15,888 | 285,036,114 |
| Population - 1990 | 463 | 15,586 | 251,960,433 |
| Pop. 2000 to Now | 38.8% | -11.0% | 15.6% |
| Pop. 1990 to Now | 59.8% | -9.3% | 30.8% |
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| Population Density | 593.6 | 1,322.7 | 93.4 |
| Land Area | 1.6 | 10.9 | 3,531,905.4 |
| Water Area | 0.0 | 1.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Philadelphia, TN | Hopatcong, NJ | United States |
| Age 0 to 4 | 2.4% | 4.2% | 5.9% |
| Age 5 to 9 | 5.7% | 5.5% | 6.1% |
| Age 10 to 14 | 6.9% | 5.1% | 6.6% |
| Age 15 to 17 | 7.4% | 3.2% | 3.9% |
| Age 18 to 20 | 5.7% | 3.1% | 4.0% |
| Age 21 to 24 | 11.6% | 3.7% | 5.2% |
| Age 25 to 34 | 13.8% | 14.9% | 13.8% |
| Age 35 to 44 | 13.4% | 15.7% | 12.9% |
| Age 45 to 54 | 11.2% | 15.8% | 12.6% |
| Age 55 to 59 | 6.2% | 9.1% | 6.7% |
| Age 60 to 64 | 3.0% | 5.9% | 6.3% |
| Age 65 to 74 | 10.0% | 9.8% | 9.6% |
| Age 75 to 84 | 2.2% | 3.6% | 4.5% |
| Age 85 and over | 0.5% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Philadelphia, TN | Hopatcong, NJ | United States |
| White | 77.1% | 77.1% | 59.4% |
| Black | 16.9% | 1.5% | 12.2% |
| Asian | 0.0% | 3.5% | 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 | 1.0% | 1.4% | 3.2% |
| Hispanic | 5.0% | 16.5% | 18.4% |
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| Marriage & Family | | | |
| | Philadelphia, TN | Hopatcong, NJ | United States |
| Married Population | 56.1% | 56.5% | 49.8% |
| Currently Married | 54.8% | 54.7% | 48.0% |
| Married but Separated | 1.3% | 1.8% | 1.8% |
| Single Population | 43.9% | 43.5% | 50.2% |
| Never Married | 28.2% | 28.4% | 33.8% |
| Divorced | 10.8% | 9.7% | 10.8% |
| Widowed | 4.8% | 5.4% | 5.6% |
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| Household Size | 3.15 | 2.54 | 2.60 |
| Households | 293 | 5,657 | 124,010,992 |
| Family Households | 219 | 3,898 | 80,755,759 |
| Married couple, w/children | 38.4% | 32.0% | 30.5% |
| Married couple, no children | 39.3% | 47.7% | 42.9% |
| Non Family Households | 74 | 1,759 | 43,255,233 |
| Single householder, w/children | 19.6% | 9.3% | 15.8% |
| Single householder, no children | 2.7% | 11.0% | 10.8% |