| | Ada, OH | Elyria, OH | United States |
| Population | 5,187 | 52,853 | 329,725,481 |
| Female Population | 51.8% | 52.8% | 50.5% |
| Male Population | 48.2% | 47.2% | 49.5% |
| Median Age | 22 | 40.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,969 | 54,522 | 309,327,143 |
| Population - 2000 | 5,582 | 55,953 | 285,036,114 |
| Population - 1990 | 5,413 | 56,746 | 251,960,433 |
| Pop. 2000 to Now | -0.9% | -3.7% | 15.6% |
| Pop. 1990 to Now | 2.2% | -5.1% | 30.8% |
| space4 | | | |
| Population Density | 2,487.8 | 2,569.8 | 93.4 |
| Land Area | 2.1 | 20.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ada, OH | Elyria, OH | United States |
| Age 0 to 4 | 3.3% | 6.3% | 5.9% |
| Age 5 to 9 | 2.4% | 5.7% | 6.1% |
| Age 10 to 14 | 2.4% | 5.1% | 6.6% |
| Age 15 to 17 | 4.1% | 4.0% | 3.9% |
| Age 18 to 20 | 34.0% | 4.4% | 4.0% |
| Age 21 to 24 | 12.1% | 5.7% | 5.2% |
| Age 25 to 34 | 12.3% | 13.2% | 13.8% |
| Age 35 to 44 | 6.9% | 11.8% | 12.9% |
| Age 45 to 54 | 7.7% | 12.5% | 12.6% |
| Age 55 to 59 | 4.9% | 6.9% | 6.7% |
| Age 60 to 64 | 3.0% | 7.4% | 6.3% |
| Age 65 to 74 | 3.9% | 10.2% | 9.6% |
| Age 75 to 84 | 1.9% | 4.6% | 4.5% |
| Age 85 and over | 1.0% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ada, OH | Elyria, OH | United States |
| White | 81.7% | 70.0% | 59.4% |
| Black | 4.6% | 13.8% | 12.2% |
| Asian | 2.5% | 0.7% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.1% | 0.4% |
| Two or More Races | 2.7% | 5.9% | 3.2% |
| Hispanic | 8.3% | 9.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ada, OH | Elyria, OH | United States |
| Married Population | 29.6% | 39.4% | 49.8% |
| Currently Married | 27.9% | 37.7% | 48.0% |
| Married but Separated | 1.7% | 1.8% | 1.8% |
| Single Population | 70.4% | 60.6% | 50.2% |
| Never Married | 63.3% | 39.9% | 33.8% |
| Divorced | 5.3% | 13.9% | 10.8% |
| Widowed | 1.7% | 6.8% | 5.6% |
| space5 | | | |
| Household Size | 2.19 | 2.25 | 2.60 |
| Households | 1,438 | 23,153 | 124,010,992 |
| Family Households | 864 | 12,998 | 80,755,759 |
| Married couple, w/children | 25.7% | 18.9% | 30.5% |
| Married couple, no children | 40.5% | 41.6% | 42.9% |
| Non Family Households | 574 | 10,155 | 43,255,233 |
| Single householder, w/children | 22.8% | 28.2% | 15.8% |
| Single householder, no children | 11.0% | 11.3% | 10.8% |