| | Jefferson, SC | Leipsic, OH | United States |
| Population | 896 | 2,340 | 329,725,481 |
| Female Population | 58.7% | 45.1% | 50.5% |
| Male Population | 41.3% | 54.9% | 49.5% |
| Median Age | 32.5 | 32.9 | 38.4 |
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| Population - 2010 | 730 | 2,097 | 309,327,143 |
| Population - 2000 | 704 | 2,236 | 285,036,114 |
| Population - 1990 | 745 | 2,203 | 251,960,433 |
| Pop. 2000 to Now | 0.0% | -9.8% | 15.6% |
| Pop. 1990 to Now | -5.5% | -8.5% | 30.8% |
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| Population Density | 497.2 | 635.2 | 93.4 |
| Land Area | 1.8 | 3.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Jefferson, SC | Leipsic, OH | United States |
| Age 0 to 4 | 8.6% | 8.2% | 5.9% |
| Age 5 to 9 | 9.8% | 8.7% | 6.1% |
| Age 10 to 14 | 7.6% | 8.9% | 6.6% |
| Age 15 to 17 | 3.0% | 4.0% | 3.9% |
| Age 18 to 20 | 2.7% | 5.0% | 4.0% |
| Age 21 to 24 | 4.9% | 5.4% | 5.2% |
| Age 25 to 34 | 16.9% | 11.1% | 13.8% |
| Age 35 to 44 | 5.5% | 9.4% | 12.9% |
| Age 45 to 54 | 11.4% | 10.4% | 12.6% |
| Age 55 to 59 | 5.0% | 9.1% | 6.7% |
| Age 60 to 64 | 5.0% | 2.4% | 6.3% |
| Age 65 to 74 | 10.4% | 9.0% | 9.6% |
| Age 75 to 84 | 9.0% | 4.9% | 4.5% |
| Age 85 and over | 0.2% | 3.5% | 1.9% |
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| Race | | | |
| | Jefferson, SC | Leipsic, OH | United States |
| White | 59.5% | 54.1% | 59.4% |
| Black | 36.3% | 1.3% | 12.2% |
| Asian | 0.0% | 0.0% | 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 | 3.5% | 3.7% | 3.2% |
| Hispanic | 0.8% | 40.9% | 18.4% |
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| Marriage & Family | | | |
| | Jefferson, SC | Leipsic, OH | United States |
| Married Population | 50.7% | 57.3% | 49.8% |
| Currently Married | 47.2% | 56.5% | 48.0% |
| Married but Separated | 3.5% | 0.7% | 1.8% |
| Single Population | 49.3% | 42.7% | 50.2% |
| Never Married | 30.0% | 28.0% | 33.8% |
| Divorced | 7.5% | 9.0% | 10.8% |
| Widowed | 11.8% | 5.8% | 5.6% |
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| Household Size | 2.62 | 2.85 | 2.60 |
| Households | 336 | 798 | 124,010,992 |
| Family Households | 256 | 583 | 80,755,759 |
| Married couple, w/children | 15.6% | 43.4% | 30.5% |
| Married couple, no children | 35.5% | 35.5% | 42.9% |
| Non Family Households | 80 | 215 | 43,255,233 |
| Single householder, w/children | 36.7% | 9.3% | 15.8% |
| Single householder, no children | 12.1% | 11.8% | 10.8% |