| | Princeton, NC | Garner, NC | United States |
| Population | 1,472 | 30,859 | 329,725,481 |
| Female Population | 57.2% | 51.5% | 50.5% |
| Male Population | 42.8% | 48.5% | 49.5% |
| Median Age | 34.3 | 36.8 | 38.4 |
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| Population - 2010 | 1,192 | 25,911 | 309,327,143 |
| Population - 2000 | 1,066 | 17,757 | 285,036,114 |
| Population - 1990 | 1,181 | 14,967 | 251,960,433 |
| Pop. 2000 to Now | 33.7% | 81.2% | 15.6% |
| Pop. 1990 to Now | 20.7% | 115.0% | 30.8% |
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| Population Density | 1,337.0 | 1,978.7 | 93.4 |
| Land Area | 1.1 | 15.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Princeton, NC | Garner, NC | United States |
| Age 0 to 4 | 10.0% | 6.7% | 5.9% |
| Age 5 to 9 | 11.3% | 6.2% | 6.1% |
| Age 10 to 14 | 4.6% | 4.6% | 6.6% |
| Age 15 to 17 | 6.7% | 3.6% | 3.9% |
| Age 18 to 20 | 2.2% | 3.4% | 4.0% |
| Age 21 to 24 | 2.2% | 4.8% | 5.2% |
| Age 25 to 34 | 13.8% | 18.3% | 13.8% |
| Age 35 to 44 | 13.8% | 11.5% | 12.9% |
| Age 45 to 54 | 8.5% | 13.0% | 12.6% |
| Age 55 to 59 | 3.9% | 4.9% | 6.7% |
| Age 60 to 64 | 6.8% | 7.0% | 6.3% |
| Age 65 to 74 | 6.0% | 9.8% | 9.6% |
| Age 75 to 84 | 9.2% | 4.7% | 4.5% |
| Age 85 and over | 1.1% | 1.5% | 1.9% |
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| Race | | | |
| | Princeton, NC | Garner, NC | United States |
| White | 48.0% | 57.2% | 59.4% |
| Black | 24.2% | 27.2% | 12.2% |
| Asian | 0.0% | 1.4% | 5.6% |
| Native American | 0.5% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.5% | 0.4% | 0.4% |
| Two or More Races | 4.7% | 3.4% | 3.2% |
| Hispanic | 22.2% | 10.0% | 18.4% |
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| Marriage & Family | | | |
| | Princeton, NC | Garner, NC | United States |
| Married Population | 46.9% | 51.9% | 49.8% |
| Currently Married | 46.9% | 50.4% | 48.0% |
| Married but Separated | 0.0% | 1.4% | 1.8% |
| Single Population | 53.1% | 48.1% | 50.2% |
| Never Married | 29.6% | 33.2% | 33.8% |
| Divorced | 17.0% | 9.7% | 10.8% |
| Widowed | 6.5% | 5.2% | 5.6% |
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| Household Size | 2.39 | 2.51 | 2.60 |
| Households | 615 | 12,221 | 124,010,992 |
| Family Households | 343 | 7,884 | 80,755,759 |
| Married couple, w/children | 46.9% | 32.4% | 30.5% |
| Married couple, no children | 23.3% | 42.9% | 42.9% |
| Non Family Households | 272 | 4,337 | 43,255,233 |
| Single householder, w/children | 19.5% | 14.0% | 15.8% |
| Single householder, no children | 10.2% | 10.7% | 10.8% |