| | Bellaire, OH | Chicopee, MA | United States |
| Population | 3,927 | 55,636 | 329,725,481 |
| Female Population | 46.9% | 50.6% | 50.5% |
| Male Population | 53.2% | 49.4% | 49.5% |
| Median Age | 36.4 | 41.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,271 | 55,306 | 309,327,143 |
| Population - 2000 | 4,892 | 54,653 | 285,036,114 |
| Population - 1990 | 6,028 | 56,632 | 251,960,433 |
| Pop. 2000 to Now | -19.1% | 0.3% | 15.6% |
| Pop. 1990 to Now | -34.4% | -3.2% | 30.8% |
| space4 | | | |
| Population Density | 2,377.1 | 2,429.1 | 93.4 |
| Land Area | 1.7 | 22.9 | 3,531,905.4 |
| Water Area | 0.0 | 1.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Bellaire, OH | Chicopee, MA | United States |
| Age 0 to 4 | 9.4% | 4.8% | 5.9% |
| Age 5 to 9 | 7.2% | 4.9% | 6.1% |
| Age 10 to 14 | 4.6% | 5.9% | 6.6% |
| Age 15 to 17 | 1.9% | 4.1% | 3.9% |
| Age 18 to 20 | 5.0% | 4.5% | 4.0% |
| Age 21 to 24 | 5.7% | 5.0% | 5.2% |
| Age 25 to 34 | 14.4% | 13.2% | 13.8% |
| Age 35 to 44 | 8.6% | 12.2% | 12.9% |
| Age 45 to 54 | 12.0% | 11.5% | 12.6% |
| Age 55 to 59 | 4.7% | 7.4% | 6.7% |
| Age 60 to 64 | 9.4% | 7.5% | 6.3% |
| Age 65 to 74 | 10.4% | 11.4% | 9.6% |
| Age 75 to 84 | 3.7% | 5.2% | 4.5% |
| Age 85 and over | 2.9% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Bellaire, OH | Chicopee, MA | United States |
| White | 86.1% | 69.4% | 59.4% |
| Black | 6.9% | 4.7% | 12.2% |
| Asian | 0.6% | 1.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.0% | 0.4% |
| Two or More Races | 6.2% | 1.6% | 3.2% |
| Hispanic | 0.0% | 22.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Bellaire, OH | Chicopee, MA | United States |
| Married Population | 41.9% | 40.1% | 49.8% |
| Currently Married | 38.2% | 38.7% | 48.0% |
| Married but Separated | 3.7% | 1.4% | 1.8% |
| Single Population | 58.1% | 59.9% | 50.2% |
| Never Married | 36.7% | 39.5% | 33.8% |
| Divorced | 13.5% | 13.2% | 10.8% |
| Widowed | 7.9% | 7.2% | 5.6% |
| space5 | | | |
| Household Size | 2.61 | 2.29 | 2.60 |
| Households | 1,485 | 23,852 | 124,010,992 |
| Family Households | 757 | 14,155 | 80,755,759 |
| Married couple, w/children | 21.8% | 20.6% | 30.5% |
| Married couple, no children | 41.5% | 39.9% | 42.9% |
| Non Family Households | 728 | 9,697 | 43,255,233 |
| Single householder, w/children | 26.4% | 22.9% | 15.8% |
| Single householder, no children | 10.3% | 16.6% | 10.8% |