| | Flint charter, MI | Saginaw charter, MI | United States |
| Population | 31,359 | 41,348 | 329,725,481 |
| Female Population | 52.4% | 53.4% | 50.5% |
| Male Population | 47.6% | 46.6% | 49.5% |
| Median Age | 38.7 | 44.6 | 38.4 |
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| Population - 2010 | 31,997 | 40,783 | 309,327,143 |
| Population - 2000 | 33,691 | 39,657 | 285,036,114 |
| Population - 1990 | 34,081 | 37,684 | 251,960,433 |
| Pop. 2000 to Now | -10.4% | -1.6% | 15.6% |
| Pop. 1990 to Now | -11.4% | 3.5% | 30.8% |
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| Population Density | 1,345.9 | 1,687.9 | 93.4 |
| Land Area | 23.3 | 24.5 | 3,531,905.4 |
| Water Area | 0.2 | 0.4 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Flint charter, MI | Saginaw charter, MI | United States |
| Age 0 to 4 | 6.5% | 5.1% | 5.9% |
| Age 5 to 9 | 7.1% | 5.0% | 6.1% |
| Age 10 to 14 | 6.2% | 4.6% | 6.6% |
| Age 15 to 17 | 4.0% | 3.4% | 3.9% |
| Age 18 to 20 | 3.6% | 3.8% | 4.0% |
| Age 21 to 24 | 4.8% | 5.0% | 5.2% |
| Age 25 to 34 | 14.3% | 13.5% | 13.8% |
| Age 35 to 44 | 9.6% | 10.0% | 12.9% |
| Age 45 to 54 | 12.9% | 12.5% | 12.6% |
| Age 55 to 59 | 7.5% | 7.2% | 6.7% |
| Age 60 to 64 | 6.8% | 7.4% | 6.3% |
| Age 65 to 74 | 9.2% | 12.4% | 9.6% |
| Age 75 to 84 | 5.0% | 6.1% | 4.5% |
| Age 85 and over | 2.5% | 4.1% | 1.9% |
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| Race | | | |
| | Flint charter, MI | Saginaw charter, MI | United States |
| White | 59.5% | 72.0% | 59.4% |
| Black | 30.3% | 12.8% | 12.2% |
| Asian | 1.4% | 4.0% | 5.6% |
| Native American | 0.3% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.5% | 0.3% | 0.4% |
| Two or More Races | 4.7% | 2.3% | 3.2% |
| Hispanic | 3.3% | 8.4% | 18.4% |
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| Marriage & Family | | | |
| | Flint charter, MI | Saginaw charter, MI | United States |
| Married Population | 40.2% | 51.9% | 49.8% |
| Currently Married | 38.7% | 50.9% | 48.0% |
| Married but Separated | 1.5% | 1.0% | 1.8% |
| Single Population | 59.8% | 48.1% | 50.2% |
| Never Married | 37.6% | 28.8% | 33.8% |
| Divorced | 15.5% | 11.4% | 10.8% |
| Widowed | 6.7% | 7.9% | 5.6% |
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| Household Size | 2.36 | 2.18 | 2.60 |
| Households | 12,952 | 18,735 | 124,010,992 |
| Family Households | 7,731 | 11,308 | 80,755,759 |
| Married couple, w/children | 20.8% | 24.1% | 30.5% |
| Married couple, no children | 37.8% | 52.5% | 42.9% |
| Non Family Households | 5,221 | 7,427 | 43,255,233 |
| Single householder, w/children | 26.3% | 13.5% | 15.8% |
| Single householder, no children | 15.1% | 9.9% | 10.8% |