| | Bellaire, MI | Alden, MI | United States |
| Population | 969 | 125 | 329,725,481 |
| Female Population | 50.1% | 57.6% | 50.5% |
| Male Population | 50.0% | 42.4% | 49.5% |
| Median Age | 44.3 | 55.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,082 | 133 | 309,327,143 |
| Population - 2000 | 1,164 | 104 | 285,036,114 |
| Population - 1990 | 1,104 | 91 | 251,960,433 |
| Pop. 2000 to Now | -8.3% | -6.7% | 15.6% |
| Pop. 1990 to Now | -3.3% | 6.6% | 30.8% |
| space4 | | | |
| Population Density | 518.7 | 312.5 | 93.4 |
| Land Area | 1.9 | 0.4 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Bellaire, MI | Alden, MI | United States |
| Age 0 to 4 | 5.1% | 0.0% | 5.9% |
| Age 5 to 9 | 4.7% | 0.0% | 6.1% |
| Age 10 to 14 | 5.2% | 3.2% | 6.6% |
| Age 15 to 17 | 3.5% | 12.8% | 3.9% |
| Age 18 to 20 | 3.7% | 8.0% | 4.0% |
| Age 21 to 24 | 4.4% | 0.0% | 5.2% |
| Age 25 to 34 | 10.9% | 0.0% | 13.8% |
| Age 35 to 44 | 13.8% | 4.8% | 12.9% |
| Age 45 to 54 | 11.1% | 20.8% | 12.6% |
| Age 55 to 59 | 5.7% | 5.6% | 6.7% |
| Age 60 to 64 | 8.9% | 11.2% | 6.3% |
| Age 65 to 74 | 12.6% | 25.6% | 9.6% |
| Age 75 to 84 | 8.3% | 4.8% | 4.5% |
| Age 85 and over | 2.1% | 3.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Bellaire, MI | Alden, MI | United States |
| White | 91.4% | 100.0% | 59.4% |
| Black | 0.7% | 0.0% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.7% | 0.0% | 0.4% |
| Two or More Races | 3.7% | 0.0% | 3.2% |
| Hispanic | 2.3% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Bellaire, MI | Alden, MI | United States |
| Married Population | 40.9% | 57.9% | 49.8% |
| Currently Married | 39.0% | 57.9% | 48.0% |
| Married but Separated | 1.9% | 0.0% | 1.8% |
| Single Population | 59.1% | 42.1% | 50.2% |
| Never Married | 32.3% | 24.8% | 33.8% |
| Divorced | 19.3% | 14.9% | 10.8% |
| Widowed | 7.5% | 2.5% | 5.6% |
| space5 | | | |
| Household Size | 2.11 | 2.12 | 2.60 |
| Households | 443 | 59 | 124,010,992 |
| Family Households | 211 | 34 | 80,755,759 |
| Married couple, w/children | 28.0% | 52.9% | 30.5% |
| Married couple, no children | 44.6% | 47.1% | 42.9% |
| Non Family Households | 232 | 25 | 43,255,233 |
| Single householder, w/children | 18.0% | 0.0% | 15.8% |
| Single householder, no children | 9.5% | 0.0% | 10.8% |