| | Struthers, OH | New Castle, PA | United States |
| Population | 10,058 | 21,992 | 329,725,481 |
| Female Population | 51.7% | 53.7% | 50.5% |
| Male Population | 48.3% | 46.3% | 49.5% |
| Median Age | 40.1 | 39.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 10,693 | 23,243 | 309,327,143 |
| Population - 2000 | 11,756 | 26,309 | 285,036,114 |
| Population - 1990 | 12,284 | 28,334 | 251,960,433 |
| Pop. 2000 to Now | -14.6% | -18.4% | 15.6% |
| Pop. 1990 to Now | -18.3% | -24.2% | 30.8% |
| space4 | | | |
| Population Density | 2,762.4 | 2,647.4 | 93.4 |
| Land Area | 3.6 | 8.3 | 3,531,905.4 |
| Water Area | 0.1 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Struthers, OH | New Castle, PA | United States |
| Age 0 to 4 | 5.1% | 6.4% | 5.9% |
| Age 5 to 9 | 5.5% | 6.2% | 6.1% |
| Age 10 to 14 | 6.4% | 6.9% | 6.6% |
| Age 15 to 17 | 4.1% | 3.7% | 3.9% |
| Age 18 to 20 | 3.3% | 3.3% | 4.0% |
| Age 21 to 24 | 4.6% | 3.9% | 5.2% |
| Age 25 to 34 | 15.6% | 14.7% | 13.8% |
| Age 35 to 44 | 10.9% | 10.9% | 12.9% |
| Age 45 to 54 | 10.8% | 12.8% | 12.6% |
| Age 55 to 59 | 7.7% | 5.8% | 6.7% |
| Age 60 to 64 | 8.2% | 8.1% | 6.3% |
| Age 65 to 74 | 10.4% | 9.9% | 9.6% |
| Age 75 to 84 | 4.3% | 4.9% | 4.5% |
| Age 85 and over | 3.0% | 2.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Struthers, OH | New Castle, PA | United States |
| White | 84.1% | 77.6% | 59.4% |
| Black | 3.5% | 10.6% | 12.2% |
| Asian | 1.2% | 0.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.0% | 0.2% |
| Other | 0.1% | 0.2% | 0.4% |
| Two or More Races | 2.6% | 7.3% | 3.2% |
| Hispanic | 8.1% | 4.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Struthers, OH | New Castle, PA | United States |
| Married Population | 42.4% | 38.0% | 49.8% |
| Currently Married | 40.6% | 35.2% | 48.0% |
| Married but Separated | 1.8% | 2.7% | 1.8% |
| Single Population | 57.6% | 62.0% | 50.2% |
| Never Married | 34.8% | 38.4% | 33.8% |
| Divorced | 16.5% | 15.0% | 10.8% |
| Widowed | 6.4% | 8.5% | 5.6% |
| space5 | | | |
| Household Size | 2.40 | 2.29 | 2.60 |
| Households | 4,156 | 9,248 | 124,010,992 |
| Family Households | 2,615 | 5,354 | 80,755,759 |
| Married couple, w/children | 23.6% | 19.0% | 30.5% |
| Married couple, no children | 38.1% | 36.4% | 42.9% |
| Non Family Households | 1,541 | 3,894 | 43,255,233 |
| Single householder, w/children | 21.2% | 30.4% | 15.8% |
| Single householder, no children | 17.1% | 14.2% | 10.8% |