| | Lackawanna, NY | Arcade, NY | United States |
| Population | 19,697 | 4,219 | 329,725,481 |
| Female Population | 52.7% | 50.8% | 50.5% |
| Male Population | 47.3% | 49.2% | 49.5% |
| Median Age | 39.1 | 44.5 | 38.4 |
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| Population - 2010 | 18,136 | 4,212 | 309,327,143 |
| Population - 2000 | 19,064 | 4,184 | 285,036,114 |
| Population - 1990 | 20,585 | 3,938 | 251,960,433 |
| Pop. 2000 to Now | -7.5% | -3.0% | 15.6% |
| Pop. 1990 to Now | -14.4% | 3.1% | 30.8% |
| space4 | | | |
| Population Density | 3,008.1 | 89.8 | 93.4 |
| Land Area | 6.5 | 47.0 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lackawanna, NY | Arcade, NY | United States |
| Age 0 to 4 | 8.4% | 4.8% | 5.9% |
| Age 5 to 9 | 6.8% | 7.2% | 6.1% |
| Age 10 to 14 | 4.5% | 4.0% | 6.6% |
| Age 15 to 17 | 3.2% | 5.7% | 3.9% |
| Age 18 to 20 | 2.3% | 2.5% | 4.0% |
| Age 21 to 24 | 5.1% | 5.3% | 5.2% |
| Age 25 to 34 | 15.2% | 8.0% | 13.8% |
| Age 35 to 44 | 9.8% | 13.7% | 12.9% |
| Age 45 to 54 | 13.2% | 14.5% | 12.6% |
| Age 55 to 59 | 7.7% | 5.0% | 6.7% |
| Age 60 to 64 | 7.6% | 9.0% | 6.3% |
| Age 65 to 74 | 9.4% | 11.2% | 9.6% |
| Age 75 to 84 | 4.7% | 5.3% | 4.5% |
| Age 85 and over | 2.2% | 3.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lackawanna, NY | Arcade, NY | United States |
| White | 73.2% | 91.5% | 59.4% |
| Black | 14.8% | 0.0% | 12.2% |
| Asian | 0.1% | 3.1% | 5.6% |
| Native American | 0.4% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 5.8% | 1.5% | 3.2% |
| Hispanic | 5.5% | 3.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lackawanna, NY | Arcade, NY | United States |
| Married Population | 38.7% | 53.9% | 49.8% |
| Currently Married | 36.4% | 51.3% | 48.0% |
| Married but Separated | 2.4% | 2.6% | 1.8% |
| Single Population | 61.3% | 46.1% | 50.2% |
| Never Married | 38.8% | 26.4% | 33.8% |
| Divorced | 15.5% | 11.0% | 10.8% |
| Widowed | 7.0% | 8.7% | 5.6% |
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| Household Size | 2.30 | 2.15 | 2.60 |
| Households | 8,475 | 1,960 | 124,010,992 |
| Family Households | 4,377 | 1,095 | 80,755,759 |
| Married couple, w/children | 25.7% | 27.4% | 30.5% |
| Married couple, no children | 36.1% | 53.1% | 42.9% |
| Non Family Households | 4,098 | 865 | 43,255,233 |
| Single householder, w/children | 20.6% | 15.3% | 15.8% |
| Single householder, no children | 17.7% | 4.2% | 10.8% |