| | Brookville, OH | West Alexandria, OH | United States |
| Population | 5,970 | 1,447 | 329,725,481 |
| Female Population | 50.7% | 53.4% | 50.5% |
| Male Population | 49.3% | 46.7% | 49.5% |
| Median Age | 45.7 | 39.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,871 | 1,376 | 309,327,143 |
| Population - 2000 | 5,289 | 1,395 | 285,036,114 |
| Population - 1990 | 4,621 | 1,460 | 251,960,433 |
| Pop. 2000 to Now | 11.2% | -5.2% | 15.6% |
| Pop. 1990 to Now | 27.3% | -9.4% | 30.8% |
| space4 | | | |
| Population Density | 1,558.8 | 1,676.7 | 93.4 |
| Land Area | 3.8 | 0.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Brookville, OH | West Alexandria, OH | United States |
| Age 0 to 4 | 3.7% | 7.9% | 5.9% |
| Age 5 to 9 | 8.7% | 5.1% | 6.1% |
| Age 10 to 14 | 7.1% | 7.0% | 6.6% |
| Age 15 to 17 | 4.0% | 2.4% | 3.9% |
| Age 18 to 20 | 1.5% | 2.4% | 4.0% |
| Age 21 to 24 | 2.3% | 5.6% | 5.2% |
| Age 25 to 34 | 11.4% | 15.5% | 13.8% |
| Age 35 to 44 | 10.5% | 13.0% | 12.9% |
| Age 45 to 54 | 11.4% | 9.3% | 12.6% |
| Age 55 to 59 | 4.7% | 9.7% | 6.7% |
| Age 60 to 64 | 6.3% | 5.2% | 6.3% |
| Age 65 to 74 | 16.3% | 9.9% | 9.6% |
| Age 75 to 84 | 7.4% | 6.2% | 4.5% |
| Age 85 and over | 4.8% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Brookville, OH | West Alexandria, OH | United States |
| White | 87.1% | 91.6% | 59.4% |
| Black | 1.4% | 0.0% | 12.2% |
| Asian | 6.6% | 1.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 1.3% | 0.4% |
| Two or More Races | 3.5% | 0.0% | 3.2% |
| Hispanic | 1.1% | 5.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Brookville, OH | West Alexandria, OH | United States |
| Married Population | 59.1% | 56.9% | 49.8% |
| Currently Married | 57.5% | 56.3% | 48.0% |
| Married but Separated | 1.5% | 0.6% | 1.8% |
| Single Population | 40.9% | 43.1% | 50.2% |
| Never Married | 21.1% | 22.1% | 33.8% |
| Divorced | 12.2% | 15.2% | 10.8% |
| Widowed | 7.6% | 5.8% | 5.6% |
| space5 | | | |
| Household Size | 2.30 | 2.47 | 2.60 |
| Households | 2,527 | 586 | 124,010,992 |
| Family Households | 1,607 | 423 | 80,755,759 |
| Married couple, w/children | 32.9% | 27.4% | 30.5% |
| Married couple, no children | 45.4% | 44.0% | 42.9% |
| Non Family Households | 920 | 163 | 43,255,233 |
| Single householder, w/children | 10.4% | 17.3% | 15.8% |
| Single householder, no children | 11.3% | 11.3% | 10.8% |