| | Lenox, MI | Ira, MI | United States |
| Population | 11,975 | 4,969 | 329,725,481 |
| Female Population | 43.3% | 49.4% | 50.5% |
| Male Population | 56.7% | 50.6% | 49.5% |
| Median Age | 35.9 | 41.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 10,463 | 5,178 | 309,327,143 |
| Population - 2000 | 8,433 | 6,966 | 285,036,114 |
| Population - 1990 | 5,400 | 5,587 | 251,960,433 |
| Pop. 2000 to Now | 29.9% | -26.4% | 15.6% |
| Pop. 1990 to Now | 102.8% | -8.3% | 30.8% |
| space4 | | | |
| Population Density | 309.4 | 291.7 | 93.4 |
| Land Area | 38.7 | 17.0 | 3,531,905.4 |
| Water Area | 0.2 | 4.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lenox, MI | Ira, MI | United States |
| Age 0 to 4 | 5.0% | 6.2% | 5.9% |
| Age 5 to 9 | 7.2% | 5.9% | 6.1% |
| Age 10 to 14 | 11.3% | 6.3% | 6.6% |
| Age 15 to 17 | 3.3% | 5.2% | 3.9% |
| Age 18 to 20 | 1.8% | 1.8% | 4.0% |
| Age 21 to 24 | 3.5% | 5.0% | 5.2% |
| Age 25 to 34 | 14.9% | 8.9% | 13.8% |
| Age 35 to 44 | 17.0% | 12.8% | 12.9% |
| Age 45 to 54 | 14.5% | 14.1% | 12.6% |
| Age 55 to 59 | 7.5% | 9.7% | 6.7% |
| Age 60 to 64 | 4.9% | 10.1% | 6.3% |
| Age 65 to 74 | 5.2% | 8.1% | 9.6% |
| Age 75 to 84 | 2.6% | 5.0% | 4.5% |
| Age 85 and over | 1.2% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lenox, MI | Ira, MI | United States |
| White | 77.6% | 95.2% | 59.4% |
| Black | 10.7% | 1.4% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.5% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 8.0% | 3.1% | 3.2% |
| Hispanic | 3.2% | 0.3% | 18.4% |
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| Marriage & Family | | | |
| | Lenox, MI | Ira, MI | United States |
| Married Population | 44.0% | 53.8% | 49.8% |
| Currently Married | 43.4% | 52.8% | 48.0% |
| Married but Separated | 0.7% | 0.9% | 1.8% |
| Single Population | 56.0% | 46.2% | 50.2% |
| Never Married | 35.0% | 29.6% | 33.8% |
| Divorced | 15.1% | 10.1% | 10.8% |
| Widowed | 5.9% | 6.5% | 5.6% |
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| Household Size | 2.80 | 2.54 | 2.60 |
| Households | 3,757 | 1,959 | 124,010,992 |
| Family Households | 2,684 | 1,319 | 80,755,759 |
| Married couple, w/children | 35.8% | 37.8% | 30.5% |
| Married couple, no children | 27.3% | 43.4% | 42.9% |
| Non Family Households | 1,073 | 640 | 43,255,233 |
| Single householder, w/children | 23.9% | 11.6% | 15.8% |
| Single householder, no children | 13.0% | 7.1% | 10.8% |