| | Melissa, TX | Lawrenceville, GA | United States |
| Population | 13,671 | 30,299 | 329,725,481 |
| Female Population | 54.4% | 52.9% | 50.5% |
| Male Population | 45.6% | 47.1% | 49.5% |
| Median Age | 36.5 | 33 | 38.4 |
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| Population - 2010 | 4,844 | 27,293 | 309,327,143 |
| Population - 2000 | 1,350 | 22,397 | 285,036,114 |
| Population - 1990 | 557 | 16,848 | 251,960,433 |
| Pop. 2000 to Now | 921.7% | 37.7% | 15.6% |
| Pop. 1990 to Now | 2,376.3% | 83.1% | 30.8% |
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| Population Density | 1,194.2 | 2,243.7 | 93.4 |
| Land Area | 11.4 | 13.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Melissa, TX | Lawrenceville, GA | United States |
| Age 0 to 4 | 8.0% | 6.6% | 5.9% |
| Age 5 to 9 | 6.9% | 9.3% | 6.1% |
| Age 10 to 14 | 9.8% | 6.2% | 6.6% |
| Age 15 to 17 | 5.9% | 3.4% | 3.9% |
| Age 18 to 20 | 5.8% | 3.5% | 4.0% |
| Age 21 to 24 | 3.0% | 6.4% | 5.2% |
| Age 25 to 34 | 8.9% | 18.6% | 13.8% |
| Age 35 to 44 | 21.2% | 12.9% | 12.9% |
| Age 45 to 54 | 15.8% | 11.3% | 12.6% |
| Age 55 to 59 | 3.5% | 5.6% | 6.7% |
| Age 60 to 64 | 3.0% | 4.6% | 6.3% |
| Age 65 to 74 | 5.4% | 6.3% | 9.6% |
| Age 75 to 84 | 1.3% | 3.6% | 4.5% |
| Age 85 and over | 1.7% | 1.7% | 1.9% |
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| Race | | | |
| | Melissa, TX | Lawrenceville, GA | United States |
| White | 69.9% | 31.0% | 59.4% |
| Black | 10.0% | 33.4% | 12.2% |
| Asian | 5.2% | 6.6% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 3.4% | 5.0% | 3.2% |
| Hispanic | 11.3% | 23.8% | 18.4% |
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| Marriage & Family | | | |
| | Melissa, TX | Lawrenceville, GA | United States |
| Married Population | 65.8% | 45.9% | 49.8% |
| Currently Married | 65.8% | 43.6% | 48.0% |
| Married but Separated | 0.0% | 2.3% | 1.8% |
| Single Population | 34.2% | 54.1% | 50.2% |
| Never Married | 27.5% | 38.6% | 33.8% |
| Divorced | 2.7% | 9.5% | 10.8% |
| Widowed | 4.0% | 6.0% | 5.6% |
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| Household Size | 3.28 | 2.68 | 2.60 |
| Households | 4,164 | 11,205 | 124,010,992 |
| Family Households | 3,733 | 7,257 | 80,755,759 |
| Married couple, w/children | 52.5% | 27.9% | 30.5% |
| Married couple, no children | 30.8% | 31.6% | 42.9% |
| Non Family Households | 431 | 3,948 | 43,255,233 |
| Single householder, w/children | 12.7% | 25.1% | 15.8% |
| Single householder, no children | 4.0% | 15.4% | 10.8% |