| | Fair Haven, NJ | Dover, VT | United States |
| Population | 6,235 | 1,130 | 329,725,481 |
| Female Population | 50.1% | 54.9% | 50.5% |
| Male Population | 49.9% | 45.1% | 49.5% |
| Median Age | 40 | 45.7 | 38.4 |
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| Population - 2010 | 6,114 | 1,123 | 309,327,143 |
| Population - 2000 | 5,937 | 1,410 | 285,036,114 |
| Population - 1990 | 5,270 | 994 | 251,960,433 |
| Pop. 2000 to Now | -3.8% | -25.0% | 15.6% |
| Pop. 1990 to Now | 8.4% | 6.3% | 30.8% |
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| Population Density | 3,914.0 | 32.1 | 93.4 |
| Land Area | 1.6 | 35.2 | 3,531,905.4 |
| Water Area | 0.5 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Fair Haven, NJ | Dover, VT | United States |
| Age 0 to 4 | 8.1% | 2.6% | 5.9% |
| Age 5 to 9 | 8.5% | 6.4% | 6.1% |
| Age 10 to 14 | 11.1% | 7.6% | 6.6% |
| Age 15 to 17 | 6.4% | 3.0% | 3.9% |
| Age 18 to 20 | 2.8% | 1.9% | 4.0% |
| Age 21 to 24 | 1.8% | 1.7% | 5.2% |
| Age 25 to 34 | 5.3% | 12.8% | 13.8% |
| Age 35 to 44 | 15.4% | 9.9% | 12.9% |
| Age 45 to 54 | 16.7% | 13.2% | 12.6% |
| Age 55 to 59 | 7.0% | 4.3% | 6.7% |
| Age 60 to 64 | 6.3% | 10.7% | 6.3% |
| Age 65 to 74 | 6.4% | 20.4% | 9.6% |
| Age 75 to 84 | 3.0% | 4.4% | 4.5% |
| Age 85 and over | 1.2% | 1.0% | 1.9% |
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| Race | | | |
| | Fair Haven, NJ | Dover, VT | United States |
| White | 93.7% | 95.0% | 59.4% |
| Black | 2.8% | 0.9% | 12.2% |
| Asian | 1.1% | 1.9% | 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 | 0.3% | 1.3% | 3.2% |
| Hispanic | 2.0% | 1.0% | 18.4% |
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| Marriage & Family | | | |
| | Fair Haven, NJ | Dover, VT | United States |
| Married Population | 68.1% | 50.2% | 49.8% |
| Currently Married | 67.5% | 46.6% | 48.0% |
| Married but Separated | 0.6% | 3.6% | 1.8% |
| Single Population | 31.9% | 49.8% | 50.2% |
| Never Married | 24.3% | 27.8% | 33.8% |
| Divorced | 5.8% | 16.5% | 10.8% |
| Widowed | 1.8% | 5.5% | 5.6% |
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| Household Size | 3.06 | 1.98 | 2.60 |
| Households | 2,038 | 570 | 124,010,992 |
| Family Households | 1,685 | 336 | 80,755,759 |
| Married couple, w/children | 51.0% | 14.0% | 30.5% |
| Married couple, no children | 37.4% | 50.3% | 42.9% |
| Non Family Households | 353 | 234 | 43,255,233 |
| Single householder, w/children | 7.9% | 32.7% | 15.8% |
| Single householder, no children | 3.7% | 3.0% | 10.8% |