| | Sheridan, MI | Forest Hills, MI | United States |
| Population | 839 | 28,327 | 329,725,481 |
| Female Population | 51.6% | 50.1% | 50.5% |
| Male Population | 48.4% | 49.9% | 49.5% |
| Median Age | 39.3 | 41.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 649 | 25,428 | 309,327,143 |
| Population - 2000 | 705 | 20,942 | 285,036,114 |
| Population - 1990 | 730 | 16,690 | 251,960,433 |
| Pop. 2000 to Now | -8.2% | 36.2% | 15.6% |
| Pop. 1990 to Now | -11.4% | 70.9% | 30.8% |
| space4 | | | |
| Population Density | 762.0 | 575.0 | 93.4 |
| Land Area | 1.1 | 49.3 | 3,531,905.4 |
| Water Area | 0.1 | 1.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Sheridan, MI | Forest Hills, MI | United States |
| Age 0 to 4 | 10.8% | 6.8% | 5.9% |
| Age 5 to 9 | 5.6% | 7.2% | 6.1% |
| Age 10 to 14 | 5.8% | 8.3% | 6.6% |
| Age 15 to 17 | 1.9% | 5.6% | 3.9% |
| Age 18 to 20 | 2.6% | 2.1% | 4.0% |
| Age 21 to 24 | 4.5% | 2.4% | 5.2% |
| Age 25 to 34 | 13.6% | 7.5% | 13.8% |
| Age 35 to 44 | 11.7% | 15.1% | 12.9% |
| Age 45 to 54 | 9.5% | 15.3% | 12.6% |
| Age 55 to 59 | 5.0% | 7.5% | 6.7% |
| Age 60 to 64 | 8.5% | 7.5% | 6.3% |
| Age 65 to 74 | 12.3% | 9.2% | 9.6% |
| Age 75 to 84 | 4.5% | 4.9% | 4.5% |
| Age 85 and over | 3.6% | 0.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Sheridan, MI | Forest Hills, MI | United States |
| White | 96.5% | 88.6% | 59.4% |
| Black | 0.0% | 1.3% | 12.2% |
| Asian | 0.2% | 3.8% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.8% | 2.4% | 3.2% |
| Hispanic | 1.4% | 3.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Sheridan, MI | Forest Hills, MI | United States |
| Married Population | 54.0% | 71.0% | 49.8% |
| Currently Married | 52.0% | 70.6% | 48.0% |
| Married but Separated | 2.0% | 0.4% | 1.8% |
| Single Population | 46.0% | 29.0% | 50.2% |
| Never Married | 25.8% | 19.0% | 33.8% |
| Divorced | 11.7% | 7.0% | 10.8% |
| Widowed | 8.6% | 3.0% | 5.6% |
| space5 | | | |
| Household Size | 2.63 | 2.82 | 2.60 |
| Households | 319 | 10,030 | 124,010,992 |
| Family Households | 215 | 8,482 | 80,755,759 |
| Married couple, w/children | 29.3% | 44.2% | 30.5% |
| Married couple, no children | 48.8% | 47.1% | 42.9% |
| Non Family Households | 104 | 1,548 | 43,255,233 |
| Single householder, w/children | 14.4% | 5.3% | 15.8% |
| Single householder, no children | 7.4% | 3.3% | 10.8% |