| | Princeton, IL | Minooka, IL | United States |
| Population | 7,750 | 12,412 | 329,725,481 |
| Female Population | 54.2% | 49.8% | 50.5% |
| Male Population | 45.8% | 50.2% | 49.5% |
| Median Age | 48.7 | 33.2 | 38.4 |
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| Population - 2010 | 7,919 | 10,991 | 309,327,143 |
| Population - 2000 | 7,501 | 3,971 | 285,036,114 |
| Population - 1990 | 7,197 | 2,561 | 251,960,433 |
| Pop. 2000 to Now | -1.3% | 188.5% | 15.6% |
| Pop. 1990 to Now | 2.9% | 347.3% | 30.8% |
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| Population Density | 964.1 | 1,319.3 | 93.4 |
| Land Area | 8.0 | 9.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Princeton, IL | Minooka, IL | United States |
| Age 0 to 4 | 4.5% | 6.5% | 5.9% |
| Age 5 to 9 | 4.8% | 7.5% | 6.1% |
| Age 10 to 14 | 6.5% | 9.9% | 6.6% |
| Age 15 to 17 | 2.9% | 5.6% | 3.9% |
| Age 18 to 20 | 2.2% | 3.3% | 4.0% |
| Age 21 to 24 | 3.7% | 5.7% | 5.2% |
| Age 25 to 34 | 12.6% | 13.5% | 13.8% |
| Age 35 to 44 | 8.0% | 16.5% | 12.9% |
| Age 45 to 54 | 13.0% | 13.3% | 12.6% |
| Age 55 to 59 | 6.9% | 6.5% | 6.7% |
| Age 60 to 64 | 6.7% | 4.9% | 6.3% |
| Age 65 to 74 | 14.8% | 5.3% | 9.6% |
| Age 75 to 84 | 9.9% | 1.1% | 4.5% |
| Age 85 and over | 3.4% | 0.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Princeton, IL | Minooka, IL | United States |
| White | 93.2% | 82.0% | 59.4% |
| Black | 0.1% | 1.9% | 12.2% |
| Asian | 1.1% | 0.9% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 1.2% | 0.2% | 0.4% |
| Two or More Races | 1.7% | 0.6% | 3.2% |
| Hispanic | 2.7% | 14.1% | 18.4% |
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| Marriage & Family | | | |
| | Princeton, IL | Minooka, IL | United States |
| Married Population | 51.1% | 63.8% | 49.8% |
| Currently Married | 50.0% | 60.3% | 48.0% |
| Married but Separated | 1.1% | 3.5% | 1.8% |
| Single Population | 48.9% | 36.2% | 50.2% |
| Never Married | 22.1% | 27.6% | 33.8% |
| Divorced | 17.3% | 6.0% | 10.8% |
| Widowed | 9.6% | 2.6% | 5.6% |
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| Household Size | 2.13 | 3.12 | 2.60 |
| Households | 3,547 | 3,978 | 124,010,992 |
| Family Households | 2,010 | 3,170 | 80,755,759 |
| Married couple, w/children | 25.5% | 54.6% | 30.5% |
| Married couple, no children | 54.6% | 31.8% | 42.9% |
| Non Family Households | 1,537 | 808 | 43,255,233 |
| Single householder, w/children | 15.8% | 10.6% | 15.8% |
| Single householder, no children | 4.1% | 2.9% | 10.8% |