| | Penns Grove, NJ | Paulsboro, NJ | United States |
| Population | 4,836 | 6,234 | 329,725,481 |
| Female Population | 53.3% | 56.9% | 50.5% |
| Male Population | 46.7% | 43.2% | 49.5% |
| Median Age | 27.2 | 42.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,092 | 6,091 | 309,327,143 |
| Population - 2000 | 4,886 | 6,160 | 285,036,114 |
| Population - 1990 | 5,228 | 6,577 | 251,960,433 |
| Pop. 2000 to Now | -2.7% | -4.8% | 15.6% |
| Pop. 1990 to Now | -9.1% | -10.8% | 30.8% |
| space4 | | | |
| Population Density | 5,415.5 | 3,240.1 | 93.4 |
| Land Area | 0.9 | 1.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Penns Grove, NJ | Paulsboro, NJ | United States |
| Age 0 to 4 | 7.7% | 4.8% | 5.9% |
| Age 5 to 9 | 11.8% | 6.3% | 6.1% |
| Age 10 to 14 | 11.9% | 3.3% | 6.6% |
| Age 15 to 17 | 5.9% | 2.8% | 3.9% |
| Age 18 to 20 | 4.1% | 2.4% | 4.0% |
| Age 21 to 24 | 5.1% | 3.8% | 5.2% |
| Age 25 to 34 | 13.1% | 17.1% | 13.8% |
| Age 35 to 44 | 12.0% | 10.6% | 12.9% |
| Age 45 to 54 | 8.7% | 14.8% | 12.6% |
| Age 55 to 59 | 4.5% | 6.9% | 6.7% |
| Age 60 to 64 | 7.5% | 6.7% | 6.3% |
| Age 65 to 74 | 5.0% | 10.1% | 9.6% |
| Age 75 to 84 | 1.3% | 5.3% | 4.5% |
| Age 85 and over | 1.3% | 5.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Penns Grove, NJ | Paulsboro, NJ | United States |
| White | 26.5% | 47.3% | 59.4% |
| Black | 34.7% | 28.7% | 12.2% |
| Asian | 0.5% | 1.7% | 5.6% |
| Native American | 0.0% | 1.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.2% | 10.0% | 3.2% |
| Hispanic | 34.1% | 11.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Penns Grove, NJ | Paulsboro, NJ | United States |
| Married Population | 34.3% | 38.6% | 49.8% |
| Currently Married | 31.7% | 34.3% | 48.0% |
| Married but Separated | 2.6% | 4.3% | 1.8% |
| Single Population | 65.7% | 61.4% | 50.2% |
| Never Married | 50.9% | 37.0% | 33.8% |
| Divorced | 12.5% | 12.7% | 10.8% |
| Widowed | 2.3% | 11.7% | 5.6% |
| space5 | | | |
| Household Size | 2.99 | 2.32 | 2.60 |
| Households | 1,613 | 2,685 | 124,010,992 |
| Family Households | 938 | 1,759 | 80,755,759 |
| Married couple, w/children | 19.3% | 10.5% | 30.5% |
| Married couple, no children | 27.7% | 35.5% | 42.9% |
| Non Family Households | 675 | 926 | 43,255,233 |
| Single householder, w/children | 39.1% | 20.8% | 15.8% |
| Single householder, no children | 13.9% | 33.1% | 10.8% |