| | Harrisburg, OH | Lawrenceburg, IN | United States |
| Population | 376 | 5,083 | 329,725,481 |
| Female Population | 48.7% | 48.0% | 50.5% |
| Male Population | 51.3% | 52.0% | 49.5% |
| Median Age | 48.7 | 39.3 | 38.4 |
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| Population - 2010 | 321 | 5,043 | 309,327,143 |
| Population - 2000 | 332 | 4,685 | 285,036,114 |
| Population - 1990 | 340 | 4,375 | 251,960,433 |
| Pop. 2000 to Now | 2.7% | 7.7% | 15.6% |
| Pop. 1990 to Now | 0.3% | 15.3% | 30.8% |
| space4 | | | |
| Population Density | 2,425.8 | 962.1 | 93.4 |
| Land Area | 0.2 | 5.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Harrisburg, OH | Lawrenceburg, IN | United States |
| Age 0 to 4 | 4.3% | 6.2% | 5.9% |
| Age 5 to 9 | 3.5% | 12.9% | 6.1% |
| Age 10 to 14 | 8.0% | 2.5% | 6.6% |
| Age 15 to 17 | 1.9% | 3.4% | 3.9% |
| Age 18 to 20 | 0.3% | 1.6% | 4.0% |
| Age 21 to 24 | 1.3% | 3.5% | 5.2% |
| Age 25 to 34 | 16.0% | 14.2% | 13.8% |
| Age 35 to 44 | 10.6% | 11.5% | 12.9% |
| Age 45 to 54 | 9.8% | 14.3% | 12.6% |
| Age 55 to 59 | 6.1% | 3.9% | 6.7% |
| Age 60 to 64 | 12.0% | 7.4% | 6.3% |
| Age 65 to 74 | 22.1% | 10.3% | 9.6% |
| Age 75 to 84 | 3.2% | 6.2% | 4.5% |
| Age 85 and over | 1.1% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Harrisburg, OH | Lawrenceburg, IN | United States |
| White | 88.0% | 93.8% | 59.4% |
| Black | 0.0% | 2.5% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 0.6% | 3.2% |
| Hispanic | 12.0% | 3.0% | 18.4% |
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| Marriage & Family | | | |
| | Harrisburg, OH | Lawrenceburg, IN | United States |
| Married Population | 58.0% | 31.4% | 49.8% |
| Currently Married | 57.7% | 30.3% | 48.0% |
| Married but Separated | 0.3% | 1.1% | 1.8% |
| Single Population | 42.0% | 68.6% | 50.2% |
| Never Married | 27.1% | 30.2% | 33.8% |
| Divorced | 6.9% | 26.4% | 10.8% |
| Widowed | 7.9% | 12.0% | 5.6% |
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| Household Size | 2.47 | 2.06 | 2.60 |
| Households | 152 | 2,288 | 124,010,992 |
| Family Households | 109 | 1,190 | 80,755,759 |
| Married couple, w/children | 14.7% | 19.8% | 30.5% |
| Married couple, no children | 67.9% | 27.8% | 42.9% |
| Non Family Households | 43 | 1,098 | 43,255,233 |
| Single householder, w/children | 16.5% | 42.7% | 15.8% |
| Single householder, no children | 0.9% | 9.7% | 10.8% |