| | Blackwood, NJ | Valrico, FL | United States |
| Population | 4,477 | 39,632 | 329,725,481 |
| Female Population | 51.5% | 54.8% | 50.5% |
| Male Population | 48.5% | 45.2% | 49.5% |
| Median Age | 39 | 43.7 | 38.4 |
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| Population - 2010 | 5,026 | 34,629 | 309,327,143 |
| Population - 2000 | 4,692 | 6,582 | 285,036,114 |
| Population - 1990 | 5,120 | 14,390 | 251,960,433 |
| Pop. 2000 to Now | 1.9% | 526.2% | 15.6% |
| Pop. 1990 to Now | -6.6% | 186.4% | 30.8% |
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| Population Density | 3,669.7 | 2,870.0 | 93.4 |
| Land Area | 1.2 | 13.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.4 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Blackwood, NJ | Valrico, FL | United States |
| Age 0 to 4 | 5.6% | 4.0% | 5.9% |
| Age 5 to 9 | 6.5% | 4.7% | 6.1% |
| Age 10 to 14 | 5.3% | 7.5% | 6.6% |
| Age 15 to 17 | 4.5% | 5.0% | 3.9% |
| Age 18 to 20 | 2.3% | 3.9% | 4.0% |
| Age 21 to 24 | 3.8% | 4.7% | 5.2% |
| Age 25 to 34 | 16.1% | 9.0% | 13.8% |
| Age 35 to 44 | 10.3% | 12.2% | 12.9% |
| Age 45 to 54 | 13.4% | 15.3% | 12.6% |
| Age 55 to 59 | 9.2% | 8.7% | 6.7% |
| Age 60 to 64 | 6.7% | 7.1% | 6.3% |
| Age 65 to 74 | 10.1% | 11.7% | 9.6% |
| Age 75 to 84 | 4.6% | 4.3% | 4.5% |
| Age 85 and over | 1.5% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Blackwood, NJ | Valrico, FL | United States |
| White | 79.7% | 57.1% | 59.4% |
| Black | 4.8% | 12.7% | 12.2% |
| Asian | 1.9% | 4.0% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.4% | 0.2% |
| Other | 0.0% | 0.5% | 0.4% |
| Two or More Races | 1.5% | 3.5% | 3.2% |
| Hispanic | 12.0% | 21.5% | 18.4% |
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| Marriage & Family | | | |
| | Blackwood, NJ | Valrico, FL | United States |
| Married Population | 53.8% | 56.5% | 49.8% |
| Currently Married | 51.5% | 55.6% | 48.0% |
| Married but Separated | 2.2% | 0.9% | 1.8% |
| Single Population | 46.2% | 43.5% | 50.2% |
| Never Married | 30.3% | 27.7% | 33.8% |
| Divorced | 10.2% | 10.6% | 10.8% |
| Widowed | 5.7% | 5.2% | 5.6% |
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| Household Size | 2.75 | 2.79 | 2.60 |
| Households | 1,628 | 14,158 | 124,010,992 |
| Family Households | 1,152 | 10,532 | 80,755,759 |
| Married couple, w/children | 29.7% | 33.7% | 30.5% |
| Married couple, no children | 44.4% | 49.2% | 42.9% |
| Non Family Households | 476 | 3,626 | 43,255,233 |
| Single householder, w/children | 14.1% | 8.5% | 15.8% |
| Single householder, no children | 11.7% | 8.6% | 10.8% |