| | Clyde, NC | Iselin, NJ | United States |
| Population | 1,702 | 17,684 | 329,725,481 |
| Female Population | 46.8% | 51.3% | 50.5% |
| Male Population | 53.2% | 48.7% | 49.5% |
| Median Age | 41.5 | 42.8 | 38.4 |
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| Population - 2010 | 1,228 | 18,726 | 309,327,143 |
| Population - 2000 | 1,324 | 16,698 | 285,036,114 |
| Population - 1990 | 1,041 | 16,141 | 251,960,433 |
| Pop. 2000 to Now | -1.2% | 15.9% | 15.6% |
| Pop. 1990 to Now | 25.7% | 19.9% | 30.8% |
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| Population Density | 1,960.8 | 5,547.1 | 93.4 |
| Land Area | 0.9 | 3.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Clyde, NC | Iselin, NJ | United States |
| Age 0 to 4 | 4.9% | 3.6% | 5.9% |
| Age 5 to 9 | 3.1% | 6.9% | 6.1% |
| Age 10 to 14 | 3.3% | 6.6% | 6.6% |
| Age 15 to 17 | 2.5% | 1.8% | 3.9% |
| Age 18 to 20 | 3.1% | 2.9% | 4.0% |
| Age 21 to 24 | 7.3% | 3.6% | 5.2% |
| Age 25 to 34 | 12.6% | 12.5% | 13.8% |
| Age 35 to 44 | 14.4% | 14.9% | 12.9% |
| Age 45 to 54 | 19.0% | 13.2% | 12.6% |
| Age 55 to 59 | 7.9% | 7.8% | 6.7% |
| Age 60 to 64 | 4.3% | 6.7% | 6.3% |
| Age 65 to 74 | 8.3% | 12.6% | 9.6% |
| Age 75 to 84 | 8.6% | 5.6% | 4.5% |
| Age 85 and over | 0.5% | 1.4% | 1.9% |
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| Race | | | |
| | Clyde, NC | Iselin, NJ | United States |
| White | 76.4% | 27.8% | 59.4% |
| Black | 0.1% | 7.4% | 12.2% |
| Asian | 0.0% | 52.3% | 5.6% |
| Native American | 0.0% | 0.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 0.4% | 3.7% | 3.2% |
| Hispanic | 23.1% | 7.8% | 18.4% |
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| Marriage & Family | | | |
| | Clyde, NC | Iselin, NJ | United States |
| Married Population | 56.6% | 63.5% | 49.8% |
| Currently Married | 53.8% | 62.8% | 48.0% |
| Married but Separated | 2.8% | 0.7% | 1.8% |
| Single Population | 43.4% | 36.5% | 50.2% |
| Never Married | 28.9% | 24.4% | 33.8% |
| Divorced | 10.3% | 4.5% | 10.8% |
| Widowed | 4.2% | 7.6% | 5.6% |
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| Household Size | 2.72 | 2.76 | 2.60 |
| Households | 626 | 6,410 | 124,010,992 |
| Family Households | 451 | 5,007 | 80,755,759 |
| Married couple, w/children | 17.1% | 32.8% | 30.5% |
| Married couple, no children | 62.3% | 46.7% | 42.9% |
| Non Family Households | 175 | 1,403 | 43,255,233 |
| Single householder, w/children | 9.8% | 9.9% | 15.8% |
| Single householder, no children | 10.9% | 10.6% | 10.8% |