| | Bergenfield, NJ | Dumont, NJ | United States |
| Population | 28,282 | 17,965 | 329,725,481 |
| Female Population | 50.3% | 51.8% | 50.5% |
| Male Population | 49.7% | 48.2% | 49.5% |
| Median Age | 39.2 | 42.8 | 38.4 |
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| Population - 2010 | 26,867 | 17,413 | 309,327,143 |
| Population - 2000 | 26,247 | 17,503 | 285,036,114 |
| Population - 1990 | 24,458 | 17,187 | 251,960,433 |
| Pop. 2000 to Now | 4.3% | 0.5% | 15.6% |
| Pop. 1990 to Now | 11.9% | 2.3% | 30.8% |
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| Population Density | 9,739.0 | 9,217.6 | 93.4 |
| Land Area | 2.9 | 1.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Bergenfield, NJ | Dumont, NJ | United States |
| Age 0 to 4 | 6.3% | 5.0% | 5.9% |
| Age 5 to 9 | 5.6% | 5.0% | 6.1% |
| Age 10 to 14 | 6.6% | 5.3% | 6.6% |
| Age 15 to 17 | 3.2% | 3.7% | 3.9% |
| Age 18 to 20 | 4.1% | 3.1% | 4.0% |
| Age 21 to 24 | 5.5% | 6.6% | 5.2% |
| Age 25 to 34 | 12.8% | 10.4% | 13.8% |
| Age 35 to 44 | 12.7% | 12.0% | 12.9% |
| Age 45 to 54 | 12.1% | 12.8% | 12.6% |
| Age 55 to 59 | 7.6% | 10.6% | 6.7% |
| Age 60 to 64 | 7.2% | 9.1% | 6.3% |
| Age 65 to 74 | 10.1% | 7.8% | 9.6% |
| Age 75 to 84 | 3.8% | 5.3% | 4.5% |
| Age 85 and over | 2.4% | 3.3% | 1.9% |
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| Race | | | |
| | Bergenfield, NJ | Dumont, NJ | United States |
| White | 36.3% | 53.8% | 59.4% |
| Black | 7.9% | 3.3% | 12.2% |
| Asian | 26.3% | 18.0% | 5.6% |
| Native American | 0.4% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.1% | 0.4% |
| Two or More Races | 1.0% | 2.8% | 3.2% |
| Hispanic | 28.0% | 22.1% | 18.4% |
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| Marriage & Family | | | |
| | Bergenfield, NJ | Dumont, NJ | United States |
| Married Population | 52.7% | 58.6% | 49.8% |
| Currently Married | 50.9% | 58.0% | 48.0% |
| Married but Separated | 1.8% | 0.6% | 1.8% |
| Single Population | 47.3% | 41.4% | 50.2% |
| Never Married | 34.0% | 25.8% | 33.8% |
| Divorced | 7.6% | 9.1% | 10.8% |
| Widowed | 5.6% | 6.5% | 5.6% |
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| Household Size | 3.09 | 2.71 | 2.60 |
| Households | 9,146 | 6,626 | 124,010,992 |
| Family Households | 6,880 | 4,912 | 80,755,759 |
| Married couple, w/children | 39.4% | 34.3% | 30.5% |
| Married couple, no children | 35.8% | 50.4% | 42.9% |
| Non Family Households | 2,266 | 1,714 | 43,255,233 |
| Single householder, w/children | 10.6% | 6.0% | 15.8% |
| Single householder, no children | 14.2% | 9.2% | 10.8% |