| | Sparta, MI | Pontiac, MI | United States |
| Population | 4,255 | 61,498 | 329,725,481 |
| Female Population | 53.2% | 51.6% | 50.5% |
| Male Population | 46.8% | 48.4% | 49.5% |
| Median Age | 34.3 | 33.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,137 | 59,688 | 309,327,143 |
| Population - 2000 | 4,159 | 66,337 | 285,036,114 |
| Population - 1990 | 3,968 | 71,166 | 251,960,433 |
| Pop. 2000 to Now | 6.0% | -11.2% | 15.6% |
| Pop. 1990 to Now | 11.1% | -17.2% | 30.8% |
| space4 | | | |
| Population Density | 1,722.7 | 3,085.7 | 93.4 |
| Land Area | 2.5 | 19.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Sparta, MI | Pontiac, MI | United States |
| Age 0 to 4 | 7.8% | 8.6% | 5.9% |
| Age 5 to 9 | 7.5% | 7.0% | 6.1% |
| Age 10 to 14 | 4.5% | 5.3% | 6.6% |
| Age 15 to 17 | 5.2% | 4.0% | 3.9% |
| Age 18 to 20 | 3.5% | 4.1% | 4.0% |
| Age 21 to 24 | 5.0% | 6.9% | 5.2% |
| Age 25 to 34 | 17.5% | 16.0% | 13.8% |
| Age 35 to 44 | 10.6% | 11.9% | 12.9% |
| Age 45 to 54 | 12.6% | 12.6% | 12.6% |
| Age 55 to 59 | 5.4% | 6.1% | 6.7% |
| Age 60 to 64 | 5.4% | 5.9% | 6.3% |
| Age 65 to 74 | 9.1% | 7.1% | 9.6% |
| Age 75 to 84 | 3.2% | 2.6% | 4.5% |
| Age 85 and over | 2.7% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Sparta, MI | Pontiac, MI | United States |
| White | 94.3% | 23.5% | 59.4% |
| Black | 0.6% | 47.0% | 12.2% |
| Asian | 0.3% | 3.8% | 5.6% |
| Native American | 0.1% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 2.8% | 4.4% | 3.2% |
| Hispanic | 1.9% | 20.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Sparta, MI | Pontiac, MI | United States |
| Married Population | 42.2% | 27.6% | 49.8% |
| Currently Married | 41.5% | 25.1% | 48.0% |
| Married but Separated | 0.7% | 2.5% | 1.8% |
| Single Population | 57.8% | 72.5% | 50.2% |
| Never Married | 28.6% | 51.8% | 33.8% |
| Divorced | 21.0% | 14.6% | 10.8% |
| Widowed | 8.2% | 6.1% | 5.6% |
| space5 | | | |
| Household Size | 2.50 | 2.43 | 2.60 |
| Households | 1,702 | 24,548 | 124,010,992 |
| Family Households | 1,125 | 12,618 | 80,755,759 |
| Married couple, w/children | 24.4% | 19.6% | 30.5% |
| Married couple, no children | 35.3% | 20.9% | 42.9% |
| Non Family Households | 577 | 11,930 | 43,255,233 |
| Single householder, w/children | 22.6% | 39.5% | 15.8% |
| Single householder, no children | 17.7% | 20.0% | 10.8% |