| | Gloucester, NJ | Montgomery, NJ | United States |
| Population | 65,602 | 23,557 | 329,725,481 |
| Female Population | 51.7% | 50.1% | 50.5% |
| Male Population | 48.4% | 49.9% | 49.5% |
| Median Age | 38.6 | 41.7 | 38.4 |
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| Population - 2010 | 64,617 | 22,292 | 309,327,143 |
| Population - 2000 | 64,350 | 17,481 | 285,036,114 |
| Population - 1990 | 53,797 | 9,612 | 251,960,433 |
| Pop. 2000 to Now | -0.9% | 32.1% | 15.6% |
| Pop. 1990 to Now | 18.5% | 140.3% | 30.8% |
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| Population Density | 2,854.4 | 729.2 | 93.4 |
| Land Area | 23.0 | 32.3 | 3,531,905.4 |
| Water Area | 0.3 | 0.2 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Gloucester, NJ | Montgomery, NJ | United States |
| Age 0 to 4 | 5.1% | 3.7% | 5.9% |
| Age 5 to 9 | 6.7% | 6.1% | 6.1% |
| Age 10 to 14 | 6.5% | 9.2% | 6.6% |
| Age 15 to 17 | 4.2% | 6.6% | 3.9% |
| Age 18 to 20 | 4.0% | 3.6% | 4.0% |
| Age 21 to 24 | 4.5% | 4.0% | 5.2% |
| Age 25 to 34 | 14.2% | 7.2% | 13.8% |
| Age 35 to 44 | 12.5% | 13.7% | 12.9% |
| Age 45 to 54 | 13.1% | 19.5% | 12.6% |
| Age 55 to 59 | 7.2% | 7.3% | 6.7% |
| Age 60 to 64 | 6.7% | 6.2% | 6.3% |
| Age 65 to 74 | 9.5% | 6.5% | 9.6% |
| Age 75 to 84 | 4.4% | 4.1% | 4.5% |
| Age 85 and over | 1.5% | 2.3% | 1.9% |
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| Race | | | |
| | Gloucester, NJ | Montgomery, NJ | United States |
| White | 66.6% | 50.1% | 59.4% |
| Black | 16.0% | 3.3% | 12.2% |
| Asian | 4.5% | 38.5% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.3% | 0.4% |
| Two or More Races | 4.0% | 2.7% | 3.2% |
| Hispanic | 8.4% | 4.9% | 18.4% |
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| Marriage & Family | | | |
| | Gloucester, NJ | Montgomery, NJ | United States |
| Married Population | 50.9% | 65.4% | 49.8% |
| Currently Married | 48.4% | 64.8% | 48.0% |
| Married but Separated | 2.5% | 0.7% | 1.8% |
| Single Population | 49.1% | 34.6% | 50.2% |
| Never Married | 35.3% | 25.4% | 33.8% |
| Divorced | 8.6% | 4.7% | 10.8% |
| Widowed | 5.3% | 4.5% | 5.6% |
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| Household Size | 2.71 | 2.93 | 2.60 |
| Households | 24,052 | 7,960 | 124,010,992 |
| Family Households | 16,566 | 6,642 | 80,755,759 |
| Married couple, w/children | 28.3% | 48.8% | 30.5% |
| Married couple, no children | 44.4% | 39.3% | 42.9% |
| Non Family Households | 7,486 | 1,318 | 43,255,233 |
| Single householder, w/children | 17.1% | 7.2% | 15.8% |
| Single householder, no children | 10.3% | 4.7% | 10.8% |