| | Jackson, OH | Portsmouth, RI | United States |
| Population | 6,225 | 17,802 | 329,725,481 |
| Female Population | 53.4% | 49.4% | 50.5% |
| Male Population | 46.6% | 50.6% | 49.5% |
| Median Age | 34.8 | 48.4 | 38.4 |
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| Population - 2010 | 6,400 | 17,393 | 309,327,143 |
| Population - 2000 | 6,184 | 17,149 | 285,036,114 |
| Population - 1990 | 6,144 | 16,857 | 251,960,433 |
| Pop. 2000 to Now | 0.9% | -0.2% | 15.6% |
| Pop. 1990 to Now | 1.6% | 1.5% | 30.8% |
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| Population Density | 755.8 | 774.2 | 93.4 |
| Land Area | 8.2 | 23.0 | 3,531,905.4 |
| Water Area | 0.3 | 36.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Jackson, OH | Portsmouth, RI | United States |
| Age 0 to 4 | 8.7% | 4.1% | 5.9% |
| Age 5 to 9 | 6.6% | 5.0% | 6.1% |
| Age 10 to 14 | 3.8% | 6.7% | 6.6% |
| Age 15 to 17 | 2.1% | 5.0% | 3.9% |
| Age 18 to 20 | 5.8% | 2.9% | 4.0% |
| Age 21 to 24 | 5.6% | 3.5% | 5.2% |
| Age 25 to 34 | 17.6% | 7.6% | 13.8% |
| Age 35 to 44 | 13.3% | 10.7% | 12.9% |
| Age 45 to 54 | 12.4% | 15.7% | 12.6% |
| Age 55 to 59 | 5.7% | 7.8% | 6.7% |
| Age 60 to 64 | 4.7% | 7.9% | 6.3% |
| Age 65 to 74 | 7.9% | 13.7% | 9.6% |
| Age 75 to 84 | 4.3% | 6.9% | 4.5% |
| Age 85 and over | 1.6% | 2.6% | 1.9% |
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| Race | | | |
| | Jackson, OH | Portsmouth, RI | United States |
| White | 90.7% | 90.6% | 59.4% |
| Black | 1.9% | 1.3% | 12.2% |
| Asian | 1.3% | 0.7% | 5.6% |
| Native American | 0.6% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 4.0% | 2.1% | 3.2% |
| Hispanic | 1.4% | 5.3% | 18.4% |
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| Marriage & Family | | | |
| | Jackson, OH | Portsmouth, RI | United States |
| Married Population | 46.1% | 59.2% | 49.8% |
| Currently Married | 41.7% | 59.0% | 48.0% |
| Married but Separated | 4.4% | 0.2% | 1.8% |
| Single Population | 53.9% | 40.8% | 50.2% |
| Never Married | 29.9% | 23.5% | 33.8% |
| Divorced | 18.0% | 11.0% | 10.8% |
| Widowed | 5.9% | 6.3% | 5.6% |
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| Household Size | 2.57 | 2.40 | 2.60 |
| Households | 2,395 | 7,278 | 124,010,992 |
| Family Households | 1,450 | 4,902 | 80,755,759 |
| Married couple, w/children | 21.4% | 34.7% | 30.5% |
| Married couple, no children | 40.5% | 51.9% | 42.9% |
| Non Family Households | 945 | 2,376 | 43,255,233 |
| Single householder, w/children | 27.9% | 6.4% | 15.8% |
| Single householder, no children | 10.3% | 7.0% | 10.8% |