| | Newton Falls, OH | Niles, OH | United States |
| Population | 4,570 | 18,319 | 329,725,481 |
| Female Population | 53.8% | 53.1% | 50.5% |
| Male Population | 46.2% | 46.9% | 49.5% |
| Median Age | 49.3 | 45.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,742 | 19,153 | 309,327,143 |
| Population - 2000 | 5,002 | 20,932 | 285,036,114 |
| Population - 1990 | 4,866 | 21,128 | 251,960,433 |
| Pop. 2000 to Now | -11.2% | -13.8% | 15.6% |
| Pop. 1990 to Now | -8.7% | -14.6% | 30.8% |
| space4 | | | |
| Population Density | 1,998.3 | 2,127.9 | 93.4 |
| Land Area | 2.3 | 8.6 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Newton Falls, OH | Niles, OH | United States |
| Age 0 to 4 | 4.8% | 3.5% | 5.9% |
| Age 5 to 9 | 2.2% | 4.0% | 6.1% |
| Age 10 to 14 | 5.6% | 5.0% | 6.6% |
| Age 15 to 17 | 3.2% | 3.7% | 3.9% |
| Age 18 to 20 | 3.2% | 3.4% | 4.0% |
| Age 21 to 24 | 4.4% | 5.1% | 5.2% |
| Age 25 to 34 | 11.3% | 11.8% | 13.8% |
| Age 35 to 44 | 9.4% | 12.9% | 12.9% |
| Age 45 to 54 | 16.7% | 11.7% | 12.6% |
| Age 55 to 59 | 4.8% | 7.2% | 6.7% |
| Age 60 to 64 | 8.3% | 7.4% | 6.3% |
| Age 65 to 74 | 12.7% | 14.1% | 9.6% |
| Age 75 to 84 | 10.5% | 7.4% | 4.5% |
| Age 85 and over | 2.8% | 2.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Newton Falls, OH | Niles, OH | United States |
| White | 96.5% | 90.0% | 59.4% |
| Black | 0.3% | 4.8% | 12.2% |
| Asian | 1.9% | 1.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.7% | 2.5% | 3.2% |
| Hispanic | 0.6% | 1.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Newton Falls, OH | Niles, OH | United States |
| Married Population | 36.0% | 41.9% | 49.8% |
| Currently Married | 35.7% | 40.4% | 48.0% |
| Married but Separated | 0.3% | 1.5% | 1.8% |
| Single Population | 64.0% | 58.1% | 50.2% |
| Never Married | 29.2% | 34.4% | 33.8% |
| Divorced | 21.8% | 15.0% | 10.8% |
| Widowed | 13.0% | 8.7% | 5.6% |
| space5 | | | |
| Household Size | 2.00 | 2.16 | 2.60 |
| Households | 2,255 | 8,367 | 124,010,992 |
| Family Households | 895 | 4,429 | 80,755,759 |
| Married couple, w/children | 28.3% | 21.0% | 30.5% |
| Married couple, no children | 46.1% | 47.3% | 42.9% |
| Non Family Households | 1,360 | 3,938 | 43,255,233 |
| Single householder, w/children | 12.2% | 19.1% | 15.8% |
| Single householder, no children | 13.4% | 12.6% | 10.8% |