| | Wellston, MI | Farmington, MI | United States |
| Population | 229 | 11,481 | 329,725,481 |
| Female Population | 45.0% | 52.2% | 50.5% |
| Male Population | 55.0% | 47.8% | 49.5% |
| Median Age | 47.8 | 38.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 215 | 10,386 | 309,327,143 |
| Population - 2000 | 297 | 10,423 | 285,036,114 |
| Population - 1990 | 221 | 10,132 | 251,960,433 |
| Pop. 2000 to Now | -9.8% | -0.3% | 15.6% |
| Pop. 1990 to Now | 21.3% | 2.6% | 30.8% |
| space4 | | | |
| Population Density | 235.1 | 4,311.3 | 93.4 |
| Land Area | 1.0 | 2.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Wellston, MI | Farmington, MI | United States |
| Age 0 to 4 | 0.0% | 5.8% | 5.9% |
| Age 5 to 9 | 0.0% | 5.1% | 6.1% |
| Age 10 to 14 | 13.5% | 5.4% | 6.6% |
| Age 15 to 17 | 6.1% | 2.7% | 3.9% |
| Age 18 to 20 | 0.0% | 2.4% | 4.0% |
| Age 21 to 24 | 5.7% | 3.9% | 5.2% |
| Age 25 to 34 | 9.6% | 19.0% | 13.8% |
| Age 35 to 44 | 6.1% | 13.0% | 12.9% |
| Age 45 to 54 | 20.1% | 10.5% | 12.6% |
| Age 55 to 59 | 3.1% | 8.0% | 6.7% |
| Age 60 to 64 | 12.2% | 6.4% | 6.3% |
| Age 65 to 74 | 15.3% | 11.3% | 9.6% |
| Age 75 to 84 | 8.3% | 3.4% | 4.5% |
| Age 85 and over | 0.0% | 3.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Wellston, MI | Farmington, MI | United States |
| White | 78.2% | 64.6% | 59.4% |
| Black | 6.1% | 9.2% | 12.2% |
| Asian | 0.0% | 18.2% | 5.6% |
| Native American | 5.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.6% | 0.4% |
| Two or More Races | 2.6% | 4.2% | 3.2% |
| Hispanic | 7.4% | 3.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Wellston, MI | Farmington, MI | United States |
| Married Population | 51.0% | 54.8% | 49.8% |
| Currently Married | 49.0% | 54.4% | 48.0% |
| Married but Separated | 2.0% | 0.4% | 1.8% |
| Single Population | 49.0% | 45.2% | 50.2% |
| Never Married | 26.8% | 29.4% | 33.8% |
| Divorced | 5.1% | 10.2% | 10.8% |
| Widowed | 17.2% | 5.6% | 5.6% |
| space5 | | | |
| Household Size | 2.08 | 2.18 | 2.60 |
| Households | 110 | 5,218 | 124,010,992 |
| Family Households | 60 | 2,933 | 80,755,759 |
| Married couple, w/children | 26.7% | 35.7% | 30.5% |
| Married couple, no children | 58.3% | 46.4% | 42.9% |
| Non Family Households | 50 | 2,285 | 43,255,233 |
| Single householder, w/children | 0.0% | 7.6% | 15.8% |
| Single householder, no children | 15.0% | 10.2% | 10.8% |