| | Amherst, OH | Strongsville, OH | United States |
| Population | 12,665 | 46,187 | 329,725,481 |
| Female Population | 49.9% | 50.0% | 50.5% |
| Male Population | 50.1% | 50.0% | 49.5% |
| Median Age | 42.9 | 46.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 12,018 | 44,714 | 309,327,143 |
| Population - 2000 | 11,797 | 43,858 | 285,036,114 |
| Population - 1990 | 10,332 | 35,308 | 251,960,433 |
| Pop. 2000 to Now | 5.0% | 1.4% | 15.6% |
| Pop. 1990 to Now | 19.9% | 26.0% | 30.8% |
| space4 | | | |
| Population Density | 1,793.4 | 1,875.8 | 93.4 |
| Land Area | 7.1 | 24.6 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Amherst, OH | Strongsville, OH | United States |
| Age 0 to 4 | 5.2% | 5.5% | 5.9% |
| Age 5 to 9 | 5.7% | 5.1% | 6.1% |
| Age 10 to 14 | 7.1% | 6.0% | 6.6% |
| Age 15 to 17 | 4.3% | 3.8% | 3.9% |
| Age 18 to 20 | 2.6% | 2.9% | 4.0% |
| Age 21 to 24 | 2.8% | 3.4% | 5.2% |
| Age 25 to 34 | 11.5% | 9.6% | 13.8% |
| Age 35 to 44 | 13.4% | 11.8% | 12.9% |
| Age 45 to 54 | 10.0% | 13.3% | 12.6% |
| Age 55 to 59 | 6.7% | 8.2% | 6.7% |
| Age 60 to 64 | 9.4% | 8.4% | 6.3% |
| Age 65 to 74 | 12.6% | 12.2% | 9.6% |
| Age 75 to 84 | 6.0% | 6.4% | 4.5% |
| Age 85 and over | 2.8% | 3.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Amherst, OH | Strongsville, OH | United States |
| White | 87.2% | 86.7% | 59.4% |
| Black | 1.4% | 2.1% | 12.2% |
| Asian | 2.0% | 5.7% | 5.6% |
| Native American | 0.1% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.2% | 0.4% |
| Two or More Races | 3.0% | 2.0% | 3.2% |
| Hispanic | 6.3% | 3.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Amherst, OH | Strongsville, OH | United States |
| Married Population | 55.4% | 59.8% | 49.8% |
| Currently Married | 55.0% | 59.3% | 48.0% |
| Married but Separated | 0.4% | 0.5% | 1.8% |
| Single Population | 44.6% | 40.2% | 50.2% |
| Never Married | 28.7% | 24.5% | 33.8% |
| Divorced | 8.6% | 9.0% | 10.8% |
| Widowed | 7.3% | 6.8% | 5.6% |
| space5 | | | |
| Household Size | 2.58 | 2.43 | 2.60 |
| Households | 4,866 | 18,832 | 124,010,992 |
| Family Households | 3,340 | 12,880 | 80,755,759 |
| Married couple, w/children | 28.4% | 32.8% | 30.5% |
| Married couple, no children | 51.6% | 53.5% | 42.9% |
| Non Family Households | 1,526 | 5,952 | 43,255,233 |
| Single householder, w/children | 11.6% | 7.1% | 15.8% |
| Single householder, no children | 8.4% | 6.6% | 10.8% |