| | Kalamazoo charter, MI | Grand Rapids charter, MI | United States |
| Population | 22,664 | 18,764 | 329,725,481 |
| Female Population | 52.0% | 47.3% | 50.5% |
| Male Population | 48.0% | 52.7% | 49.5% |
| Median Age | 35.4 | 41.5 | 38.4 |
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| Population - 2010 | 21,941 | 16,736 | 309,327,143 |
| Population - 2000 | 21,675 | 14,056 | 285,036,114 |
| Population - 1990 | 20,976 | 10,760 | 251,960,433 |
| Pop. 2000 to Now | 4.3% | 34.1% | 15.6% |
| Pop. 1990 to Now | 7.8% | 75.2% | 30.8% |
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| Population Density | 1,939.9 | 1,222.8 | 93.4 |
| Land Area | 11.7 | 15.3 | 3,531,905.4 |
| Water Area | 0.1 | 0.2 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Kalamazoo charter, MI | Grand Rapids charter, MI | United States |
| Age 0 to 4 | 4.7% | 4.9% | 5.9% |
| Age 5 to 9 | 4.8% | 7.7% | 6.1% |
| Age 10 to 14 | 6.1% | 8.4% | 6.6% |
| Age 15 to 17 | 3.8% | 4.8% | 3.9% |
| Age 18 to 20 | 3.6% | 2.4% | 4.0% |
| Age 21 to 24 | 10.9% | 4.5% | 5.2% |
| Age 25 to 34 | 15.4% | 8.9% | 13.8% |
| Age 35 to 44 | 14.5% | 13.0% | 12.9% |
| Age 45 to 54 | 12.8% | 12.4% | 12.6% |
| Age 55 to 59 | 4.5% | 9.3% | 6.7% |
| Age 60 to 64 | 4.9% | 5.5% | 6.3% |
| Age 65 to 74 | 7.8% | 9.3% | 9.6% |
| Age 75 to 84 | 4.1% | 5.2% | 4.5% |
| Age 85 and over | 1.9% | 3.8% | 1.9% |
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| Race | | | |
| | Kalamazoo charter, MI | Grand Rapids charter, MI | United States |
| White | 69.8% | 86.3% | 59.4% |
| Black | 15.5% | 2.1% | 12.2% |
| Asian | 2.7% | 6.0% | 5.6% |
| Native American | 0.1% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 5.8% | 2.2% | 3.2% |
| Hispanic | 6.0% | 3.4% | 18.4% |
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| Marriage & Family | | | |
| | Kalamazoo charter, MI | Grand Rapids charter, MI | United States |
| Married Population | 36.8% | 64.5% | 49.8% |
| Currently Married | 35.3% | 64.1% | 48.0% |
| Married but Separated | 1.5% | 0.3% | 1.8% |
| Single Population | 63.2% | 35.5% | 50.2% |
| Never Married | 42.7% | 22.5% | 33.8% |
| Divorced | 14.7% | 6.1% | 10.8% |
| Widowed | 5.8% | 6.9% | 5.6% |
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| Household Size | 2.21 | 2.70 | 2.60 |
| Households | 10,143 | 6,809 | 124,010,992 |
| Family Households | 5,230 | 5,183 | 80,755,759 |
| Married couple, w/children | 23.6% | 38.6% | 30.5% |
| Married couple, no children | 37.2% | 51.3% | 42.9% |
| Non Family Households | 4,913 | 1,626 | 43,255,233 |
| Single householder, w/children | 26.7% | 6.8% | 15.8% |
| Single householder, no children | 12.5% | 3.4% | 10.8% |