| | Bellaire, OH | Richfield, MN | United States |
| Population | 3,927 | 36,899 | 329,725,481 |
| Female Population | 46.9% | 49.0% | 50.5% |
| Male Population | 53.2% | 51.0% | 49.5% |
| Median Age | 36.4 | 37.3 | 38.4 |
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| Population - 2010 | 4,271 | 35,263 | 309,327,143 |
| Population - 2000 | 4,892 | 34,439 | 285,036,114 |
| Population - 1990 | 6,028 | 35,710 | 251,960,433 |
| Pop. 2000 to Now | -19.1% | 5.2% | 15.6% |
| Pop. 1990 to Now | -34.4% | 1.5% | 30.8% |
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| Population Density | 2,377.1 | 5,490.1 | 93.4 |
| Land Area | 1.7 | 6.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Bellaire, OH | Richfield, MN | United States |
| Age 0 to 4 | 9.4% | 5.6% | 5.9% |
| Age 5 to 9 | 7.2% | 5.7% | 6.1% |
| Age 10 to 14 | 4.6% | 4.9% | 6.6% |
| Age 15 to 17 | 1.9% | 3.4% | 3.9% |
| Age 18 to 20 | 5.0% | 2.4% | 4.0% |
| Age 21 to 24 | 5.7% | 4.8% | 5.2% |
| Age 25 to 34 | 14.4% | 19.4% | 13.8% |
| Age 35 to 44 | 8.6% | 14.5% | 12.9% |
| Age 45 to 54 | 12.0% | 10.8% | 12.6% |
| Age 55 to 59 | 4.7% | 6.1% | 6.7% |
| Age 60 to 64 | 9.4% | 5.8% | 6.3% |
| Age 65 to 74 | 10.4% | 9.8% | 9.6% |
| Age 75 to 84 | 3.7% | 4.0% | 4.5% |
| Age 85 and over | 2.9% | 2.7% | 1.9% |
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| Race | | | |
| | Bellaire, OH | Richfield, MN | United States |
| White | 86.1% | 59.3% | 59.4% |
| Black | 6.9% | 11.3% | 12.2% |
| Asian | 0.6% | 5.5% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.2% | 0.6% | 0.4% |
| Two or More Races | 6.2% | 3.6% | 3.2% |
| Hispanic | 0.0% | 19.4% | 18.4% |
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| Marriage & Family | | | |
| | Bellaire, OH | Richfield, MN | United States |
| Married Population | 41.9% | 49.4% | 49.8% |
| Currently Married | 38.2% | 48.8% | 48.0% |
| Married but Separated | 3.7% | 0.6% | 1.8% |
| Single Population | 58.1% | 50.6% | 50.2% |
| Never Married | 36.7% | 36.4% | 33.8% |
| Divorced | 13.5% | 9.6% | 10.8% |
| Widowed | 7.9% | 4.6% | 5.6% |
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| Household Size | 2.61 | 2.34 | 2.60 |
| Households | 1,485 | 15,648 | 124,010,992 |
| Family Households | 757 | 9,133 | 80,755,759 |
| Married couple, w/children | 21.8% | 26.9% | 30.5% |
| Married couple, no children | 41.5% | 50.0% | 42.9% |
| Non Family Households | 728 | 6,515 | 43,255,233 |
| Single householder, w/children | 26.4% | 12.8% | 15.8% |
| Single householder, no children | 10.3% | 10.4% | 10.8% |