| | Somerset, OH | Camden, OH | United States |
| Population | 1,743 | 2,049 | 329,725,481 |
| Female Population | 52.6% | 46.9% | 50.5% |
| Male Population | 47.5% | 53.1% | 49.5% |
| Median Age | 34.5 | 44.8 | 38.4 |
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| Population - 2010 | 1,492 | 2,039 | 309,327,143 |
| Population - 2000 | 1,549 | 2,302 | 285,036,114 |
| Population - 1990 | 1,138 | 2,210 | 251,960,433 |
| Pop. 2000 to Now | -5.4% | -14.3% | 15.6% |
| Pop. 1990 to Now | 28.7% | -10.7% | 30.8% |
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| Population Density | 1,496.1 | 1,651.1 | 93.4 |
| Land Area | 1.2 | 1.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Somerset, OH | Camden, OH | United States |
| Age 0 to 4 | 3.4% | 6.1% | 5.9% |
| Age 5 to 9 | 6.3% | 1.8% | 6.1% |
| Age 10 to 14 | 10.6% | 3.3% | 6.6% |
| Age 15 to 17 | 10.4% | 7.0% | 3.9% |
| Age 18 to 20 | 5.0% | 6.6% | 4.0% |
| Age 21 to 24 | 4.5% | 6.3% | 5.2% |
| Age 25 to 34 | 10.5% | 6.6% | 13.8% |
| Age 35 to 44 | 11.9% | 12.9% | 12.9% |
| Age 45 to 54 | 9.9% | 18.4% | 12.6% |
| Age 55 to 59 | 5.0% | 5.3% | 6.7% |
| Age 60 to 64 | 7.0% | 7.7% | 6.3% |
| Age 65 to 74 | 5.9% | 12.6% | 9.6% |
| Age 75 to 84 | 7.0% | 3.6% | 4.5% |
| Age 85 and over | 2.6% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Somerset, OH | Camden, OH | United States |
| White | 89.7% | 99.0% | 59.4% |
| Black | 1.4% | 0.0% | 12.2% |
| Asian | 0.0% | 0.3% | 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 | 6.3% | 0.6% | 3.2% |
| Hispanic | 2.6% | 0.0% | 18.4% |
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| Marriage & Family | | | |
| | Somerset, OH | Camden, OH | United States |
| Married Population | 36.1% | 52.3% | 49.8% |
| Currently Married | 35.4% | 50.1% | 48.0% |
| Married but Separated | 0.6% | 2.2% | 1.8% |
| Single Population | 63.9% | 47.7% | 50.2% |
| Never Married | 40.3% | 32.2% | 33.8% |
| Divorced | 12.7% | 8.0% | 10.8% |
| Widowed | 10.9% | 7.5% | 5.6% |
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| Household Size | 2.71 | 2.39 | 2.60 |
| Households | 619 | 858 | 124,010,992 |
| Family Households | 340 | 630 | 80,755,759 |
| Married couple, w/children | 35.6% | 22.9% | 30.5% |
| Married couple, no children | 26.5% | 41.7% | 42.9% |
| Non Family Households | 279 | 228 | 43,255,233 |
| Single householder, w/children | 27.1% | 26.2% | 15.8% |
| Single householder, no children | 10.9% | 9.2% | 10.8% |