| | Wylie, TX | Princeton, TX | United States |
| Population | 55,426 | 16,683 | 329,725,481 |
| Female Population | 51.9% | 47.6% | 50.5% |
| Male Population | 48.1% | 52.5% | 49.5% |
| Median Age | 34.4 | 32.3 | 38.4 |
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| Population - 2010 | 42,063 | 6,915 | 309,327,143 |
| Population - 2000 | 15,132 | 3,477 | 285,036,114 |
| Population - 1990 | 8,716 | 2,321 | 251,960,433 |
| Pop. 2000 to Now | 260.0% | 351.5% | 15.6% |
| Pop. 1990 to Now | 524.9% | 576.4% | 30.8% |
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| Population Density | 2,512.9 | 1,755.4 | 93.4 |
| Land Area | 22.1 | 9.5 | 3,531,905.4 |
| Water Area | 15.2 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Wylie, TX | Princeton, TX | United States |
| Age 0 to 4 | 7.4% | 6.9% | 5.9% |
| Age 5 to 9 | 7.6% | 10.7% | 6.1% |
| Age 10 to 14 | 7.8% | 8.2% | 6.6% |
| Age 15 to 17 | 4.9% | 4.7% | 3.9% |
| Age 18 to 20 | 4.5% | 4.7% | 4.0% |
| Age 21 to 24 | 5.5% | 4.2% | 5.2% |
| Age 25 to 34 | 13.7% | 16.4% | 13.8% |
| Age 35 to 44 | 15.8% | 17.6% | 12.9% |
| Age 45 to 54 | 17.2% | 11.2% | 12.6% |
| Age 55 to 59 | 5.2% | 3.8% | 6.7% |
| Age 60 to 64 | 3.2% | 5.6% | 6.3% |
| Age 65 to 74 | 4.8% | 4.1% | 9.6% |
| Age 75 to 84 | 1.9% | 1.3% | 4.5% |
| Age 85 and over | 0.4% | 0.6% | 1.9% |
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| Race | | | |
| | Wylie, TX | Princeton, TX | United States |
| White | 54.2% | 47.1% | 59.4% |
| Black | 13.0% | 18.6% | 12.2% |
| Asian | 8.3% | 1.7% | 5.6% |
| Native American | 0.2% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.5% | 1.1% | 0.4% |
| Two or More Races | 4.6% | 2.0% | 3.2% |
| Hispanic | 19.2% | 29.5% | 18.4% |
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| Marriage & Family | | | |
| | Wylie, TX | Princeton, TX | United States |
| Married Population | 57.2% | 58.6% | 49.8% |
| Currently Married | 55.2% | 57.3% | 48.0% |
| Married but Separated | 2.1% | 1.3% | 1.8% |
| Single Population | 42.8% | 41.4% | 50.2% |
| Never Married | 28.6% | 27.2% | 33.8% |
| Divorced | 10.7% | 10.0% | 10.8% |
| Widowed | 3.5% | 4.2% | 5.6% |
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| Household Size | 3.12 | 3.13 | 2.60 |
| Households | 17,710 | 5,331 | 124,010,992 |
| Family Households | 14,193 | 4,456 | 80,755,759 |
| Married couple, w/children | 48.4% | 42.0% | 30.5% |
| Married couple, no children | 29.7% | 32.7% | 42.9% |
| Non Family Households | 3,517 | 875 | 43,255,233 |
| Single householder, w/children | 14.9% | 16.6% | 15.8% |
| Single householder, no children | 7.0% | 8.7% | 10.8% |