| | Iosco, MI | Westland, MI | United States |
| Population | 3,894 | 84,961 | 329,725,481 |
| Female Population | 46.5% | 53.6% | 50.5% |
| Male Population | 53.5% | 46.4% | 49.5% |
| Median Age | 41.8 | 38.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,804 | 83,960 | 309,327,143 |
| Population - 2000 | 3,039 | 86,602 | 285,036,114 |
| Population - 1990 | 1,567 | 84,724 | 251,960,433 |
| Pop. 2000 to Now | 27.3% | -6.3% | 15.6% |
| Pop. 1990 to Now | 147.0% | -4.3% | 30.8% |
| space4 | | | |
| Population Density | 110.7 | 4,158.2 | 93.4 |
| Land Area | 35.2 | 20.4 | 3,531,905.4 |
| Water Area | 0.3 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Iosco, MI | Westland, MI | United States |
| Age 0 to 4 | 5.4% | 7.1% | 5.9% |
| Age 5 to 9 | 5.4% | 5.9% | 6.1% |
| Age 10 to 14 | 7.5% | 5.9% | 6.6% |
| Age 15 to 17 | 4.0% | 2.9% | 3.9% |
| Age 18 to 20 | 3.6% | 2.8% | 4.0% |
| Age 21 to 24 | 5.9% | 5.1% | 5.2% |
| Age 25 to 34 | 6.9% | 15.4% | 13.8% |
| Age 35 to 44 | 15.8% | 12.2% | 12.9% |
| Age 45 to 54 | 14.3% | 12.7% | 12.6% |
| Age 55 to 59 | 12.2% | 6.8% | 6.7% |
| Age 60 to 64 | 6.2% | 6.7% | 6.3% |
| Age 65 to 74 | 10.2% | 10.0% | 9.6% |
| Age 75 to 84 | 2.4% | 4.4% | 4.5% |
| Age 85 and over | 0.3% | 2.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Iosco, MI | Westland, MI | United States |
| White | 96.2% | 63.7% | 59.4% |
| Black | 0.0% | 22.1% | 12.2% |
| Asian | 0.7% | 4.0% | 5.6% |
| Native American | 0.6% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 1.9% | 4.9% | 3.2% |
| Hispanic | 0.6% | 4.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Iosco, MI | Westland, MI | United States |
| Married Population | 68.3% | 40.6% | 49.8% |
| Currently Married | 68.1% | 39.0% | 48.0% |
| Married but Separated | 0.3% | 1.6% | 1.8% |
| Single Population | 31.7% | 59.4% | 50.2% |
| Never Married | 23.3% | 37.7% | 33.8% |
| Divorced | 4.4% | 15.1% | 10.8% |
| Widowed | 4.0% | 6.6% | 5.6% |
| space5 | | | |
| Household Size | 2.84 | 2.39 | 2.60 |
| Households | 1,367 | 35,263 | 124,010,992 |
| Family Households | 1,144 | 19,762 | 80,755,759 |
| Married couple, w/children | 40.0% | 25.4% | 30.5% |
| Married couple, no children | 53.4% | 38.6% | 42.9% |
| Non Family Households | 223 | 15,501 | 43,255,233 |
| Single householder, w/children | 5.0% | 20.1% | 15.8% |
| Single householder, no children | 1.6% | 15.9% | 10.8% |