| | Groesbeck, OH | Middletown, OH | United States |
| Population | 8,110 | 50,114 | 329,725,481 |
| Female Population | 54.7% | 52.5% | 50.5% |
| Male Population | 45.4% | 47.5% | 49.5% |
| Median Age | 33.8 | 38.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 6,778 | 48,739 | 309,327,143 |
| Population - 2000 | 7,202 | 51,605 | 285,036,114 |
| Population - 1990 | 6,684 | 46,022 | 251,960,433 |
| Pop. 2000 to Now | -10.3% | -5.2% | 15.6% |
| Pop. 1990 to Now | -3.4% | 6.3% | 30.8% |
| space4 | | | |
| Population Density | 2,754.8 | 1,917.0 | 93.4 |
| Land Area | 2.9 | 26.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Groesbeck, OH | Middletown, OH | United States |
| Age 0 to 4 | 6.1% | 5.4% | 5.9% |
| Age 5 to 9 | 5.0% | 6.3% | 6.1% |
| Age 10 to 14 | 8.3% | 6.9% | 6.6% |
| Age 15 to 17 | 3.1% | 3.2% | 3.9% |
| Age 18 to 20 | 3.8% | 3.3% | 4.0% |
| Age 21 to 24 | 2.5% | 7.8% | 5.2% |
| Age 25 to 34 | 23.6% | 12.8% | 13.8% |
| Age 35 to 44 | 10.3% | 10.9% | 12.9% |
| Age 45 to 54 | 11.3% | 12.2% | 12.6% |
| Age 55 to 59 | 8.2% | 6.9% | 6.7% |
| Age 60 to 64 | 4.9% | 7.4% | 6.3% |
| Age 65 to 74 | 6.7% | 10.7% | 9.6% |
| Age 75 to 84 | 3.7% | 4.0% | 4.5% |
| Age 85 and over | 2.5% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Groesbeck, OH | Middletown, OH | United States |
| White | 56.5% | 77.9% | 59.4% |
| Black | 36.1% | 11.3% | 12.2% |
| Asian | 0.3% | 0.6% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 6.6% | 5.3% | 3.2% |
| Hispanic | 0.0% | 4.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Groesbeck, OH | Middletown, OH | United States |
| Married Population | 44.5% | 40.5% | 49.8% |
| Currently Married | 44.2% | 36.9% | 48.0% |
| Married but Separated | 0.3% | 3.6% | 1.8% |
| Single Population | 55.5% | 59.5% | 50.2% |
| Never Married | 38.0% | 36.9% | 33.8% |
| Divorced | 14.5% | 14.3% | 10.8% |
| Widowed | 3.1% | 8.3% | 5.6% |
| space5 | | | |
| Household Size | 2.51 | 2.42 | 2.60 |
| Households | 3,233 | 20,441 | 124,010,992 |
| Family Households | 2,122 | 11,805 | 80,755,759 |
| Married couple, w/children | 29.7% | 19.6% | 30.5% |
| Married couple, no children | 33.4% | 39.8% | 42.9% |
| Non Family Households | 1,111 | 8,636 | 43,255,233 |
| Single householder, w/children | 18.0% | 27.1% | 15.8% |
| Single householder, no children | 18.9% | 13.4% | 10.8% |