| | Warren, ME | United States, ME |
| Population | 4,812 | 329,725,481 |
| Female Population | 35.1% | 50.5% |
| Male Population | 64.9% | 49.5% |
| Median Age | 43.5 | 38.4 |
| space3 | | |
| Population - 2010 | 4,753 | 309,327,143 |
| Population - 2000 | 3,794 | 285,036,114 |
| Population - 1990 | 3,192 | 251,960,433 |
| Pop. 2000 to Now | 27.4% | 15.6% |
| Pop. 1990 to Now | 51.5% | 30.8% |
| space4 | | |
| Population Density | 103.6 | 93.4 |
| Land Area | 46.5 | 3,531,905.4 |
| Water Area | 2.3 | 264,836.8 |
| space | | |
| Est. Total Population By Age | | |
| | Warren, ME | Warren, ME |
| Age 0 to 4 | 1.9% | 5.9% |
| Age 5 to 9 | 2.6% | 6.1% |
| Age 10 to 14 | 5.7% | 6.6% |
| Age 15 to 17 | 3.9% | 3.9% |
| Age 18 to 20 | 2.4% | 4.0% |
| Age 21 to 24 | 2.4% | 5.2% |
| Age 25 to 34 | 13.4% | 13.8% |
| Age 35 to 44 | 20.4% | 12.9% |
| Age 45 to 54 | 22.4% | 12.6% |
| Age 55 to 59 | 7.9% | 6.7% |
| Age 60 to 64 | 10.5% | 6.3% |
| Age 65 to 74 | 4.3% | 9.6% |
| Age 75 to 84 | 1.8% | 4.5% |
| Age 85 and over | 0.5% | 1.9% |
| space1 | | |
| Race | | |
| | Warren, ME | Warren, ME |
| White | 91.9% | 59.4% |
| Black | 1.2% | 12.2% |
| Asian | 0.2% | 5.6% |
| Native American | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% |
| Other | 0.0% | 0.4% |
| Two or More Races | 3.9% | 3.2% |
| Hispanic | 2.4% | 18.4% |
| space2 | | |
| Marriage & Family | | |
| | Warren, ME | Warren, ME |
| Married Population | 42.9% | 49.8% |
| Currently Married | 42.2% | 48.0% |
| Married but Separated | 0.7% | 1.8% |
| Single Population | 57.1% | 50.2% |
| Never Married | 36.6% | 33.8% |
| Divorced | 15.4% | 10.8% |
| Widowed | 5.1% | 5.6% |
| space5 | | |
| Household Size | 2.34 | 2.60 |
| Households | 1,557 | 124,010,992 |
| Family Households | 999 | 80,755,759 |
| Married couple, w/children | 23.4% | 30.5% |
| Married couple, no children | 55.2% | 42.9% |
| Non Family Households | 558 | 43,255,233 |
| Single householder, w/children | 14.2% | 15.8% |
| Single householder, no children | 7.2% | 10.8% |