| | Lawrence township (Mercer County), NJ | Ewing, NJ | United States |
| Population | 33,178 | 37,284 | 329,725,481 |
| Female Population | 52.5% | 51.7% | 50.5% |
| Male Population | 47.5% | 48.4% | 49.5% |
| Median Age | 39.8 | 36.9 | 38.4 |
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| Population - 2010 | 33,456 | 35,736 | 309,327,143 |
| Population - 2000 | 29,159 | 35,707 | 285,036,114 |
| Population - 1990 | 25,787 | 34,185 | 251,960,433 |
| Pop. 2000 to Now | 11.8% | 2.1% | 15.6% |
| Pop. 1990 to Now | 26.4% | 6.6% | 30.8% |
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| Population Density | 1,521.4 | 2,444.9 | 93.4 |
| Land Area | 21.8 | 15.3 | 3,531,905.4 |
| Water Area | 0.3 | 0.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Lawrence township (Mercer County), NJ | Ewing, NJ | United States |
| Age 0 to 4 | 4.3% | 4.1% | 5.9% |
| Age 5 to 9 | 4.6% | 3.4% | 6.1% |
| Age 10 to 14 | 6.8% | 4.6% | 6.6% |
| Age 15 to 17 | 3.8% | 3.5% | 3.9% |
| Age 18 to 20 | 7.1% | 12.0% | 4.0% |
| Age 21 to 24 | 7.7% | 10.0% | 5.2% |
| Age 25 to 34 | 10.7% | 10.1% | 13.8% |
| Age 35 to 44 | 12.5% | 9.8% | 12.9% |
| Age 45 to 54 | 14.9% | 12.3% | 12.6% |
| Age 55 to 59 | 6.1% | 6.3% | 6.7% |
| Age 60 to 64 | 6.2% | 6.2% | 6.3% |
| Age 65 to 74 | 8.9% | 9.6% | 9.6% |
| Age 75 to 84 | 3.7% | 5.1% | 4.5% |
| Age 85 and over | 2.7% | 2.9% | 1.9% |
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| Race | | | |
| | Lawrence township (Mercer County), NJ | Ewing, NJ | United States |
| White | 57.7% | 54.4% | 59.4% |
| Black | 10.3% | 28.7% | 12.2% |
| Asian | 15.3% | 5.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.3% | 0.4% |
| Two or More Races | 1.9% | 2.9% | 3.2% |
| Hispanic | 14.5% | 8.6% | 18.4% |
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| Marriage & Family | | | |
| | Lawrence township (Mercer County), NJ | Ewing, NJ | United States |
| Married Population | 50.2% | 35.8% | 49.8% |
| Currently Married | 49.0% | 33.8% | 48.0% |
| Married but Separated | 1.2% | 2.1% | 1.8% |
| Single Population | 49.8% | 64.2% | 50.2% |
| Never Married | 36.5% | 48.3% | 33.8% |
| Divorced | 7.8% | 9.3% | 10.8% |
| Widowed | 5.5% | 6.5% | 5.6% |
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| Household Size | 2.61 | 2.46 | 2.60 |
| Households | 11,849 | 13,284 | 124,010,992 |
| Family Households | 7,724 | 7,146 | 80,755,759 |
| Married couple, w/children | 40.1% | 27.5% | 30.5% |
| Married couple, no children | 42.1% | 41.8% | 42.9% |
| Non Family Households | 4,125 | 6,138 | 43,255,233 |
| Single householder, w/children | 8.0% | 11.2% | 15.8% |
| Single householder, no children | 9.8% | 19.5% | 10.8% |