| | Marlton, NJ | Medford Lakes, NJ | United States |
| Population | 10,491 | 4,240 | 329,725,481 |
| Female Population | 49.4% | 55.5% | 50.5% |
| Male Population | 50.6% | 44.5% | 49.5% |
| Median Age | 40.8 | 43.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 10,310 | 4,154 | 309,327,143 |
| Population - 2000 | 10,260 | 4,173 | 285,036,114 |
| Population - 1990 | 10,228 | 4,462 | 251,960,433 |
| Pop. 2000 to Now | 0.7% | -6.3% | 15.6% |
| Pop. 1990 to Now | 1.0% | -12.4% | 30.8% |
| space4 | | | |
| Population Density | 3,231.0 | 3,719.3 | 93.4 |
| Land Area | 3.2 | 1.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Marlton, NJ | Medford Lakes, NJ | United States |
| Age 0 to 4 | 4.3% | 5.0% | 5.9% |
| Age 5 to 9 | 4.0% | 8.1% | 6.1% |
| Age 10 to 14 | 6.7% | 6.5% | 6.6% |
| Age 15 to 17 | 3.8% | 5.4% | 3.9% |
| Age 18 to 20 | 2.2% | 4.2% | 4.0% |
| Age 21 to 24 | 4.5% | 3.2% | 5.2% |
| Age 25 to 34 | 17.5% | 9.5% | 13.8% |
| Age 35 to 44 | 12.3% | 10.1% | 12.9% |
| Age 45 to 54 | 11.3% | 16.3% | 12.6% |
| Age 55 to 59 | 8.4% | 5.0% | 6.7% |
| Age 60 to 64 | 8.7% | 5.9% | 6.3% |
| Age 65 to 74 | 6.4% | 11.7% | 9.6% |
| Age 75 to 84 | 7.5% | 7.7% | 4.5% |
| Age 85 and over | 2.5% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Marlton, NJ | Medford Lakes, NJ | United States |
| White | 85.6% | 90.3% | 59.4% |
| Black | 1.8% | 0.0% | 12.2% |
| Asian | 5.1% | 2.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 0.7% | 4.7% | 3.2% |
| Hispanic | 6.4% | 2.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Marlton, NJ | Medford Lakes, NJ | United States |
| Married Population | 48.3% | 60.8% | 49.8% |
| Currently Married | 46.4% | 59.8% | 48.0% |
| Married but Separated | 1.9% | 1.0% | 1.8% |
| Single Population | 51.7% | 39.2% | 50.2% |
| Never Married | 33.9% | 20.8% | 33.8% |
| Divorced | 11.5% | 11.6% | 10.8% |
| Widowed | 6.3% | 6.7% | 5.6% |
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| Household Size | 2.33 | 2.93 | 2.60 |
| Households | 4,500 | 1,448 | 124,010,992 |
| Family Households | 2,476 | 1,189 | 80,755,759 |
| Married couple, w/children | 36.3% | 41.4% | 30.5% |
| Married couple, no children | 41.0% | 43.2% | 42.9% |
| Non Family Households | 2,024 | 259 | 43,255,233 |
| Single householder, w/children | 12.5% | 6.1% | 15.8% |
| Single householder, no children | 10.2% | 9.3% | 10.8% |