| | Rome, ME | Vassalboro, ME | United States |
| Population | 1,064 | 4,475 | 329,725,481 |
| Female Population | 46.7% | 49.7% | 50.5% |
| Male Population | 53.3% | 50.3% | 49.5% |
| Median Age | 53.6 | 51.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,005 | 4,357 | 309,327,143 |
| Population - 2000 | 980 | 4,047 | 285,036,114 |
| Population - 1990 | 758 | 3,679 | 251,960,433 |
| Pop. 2000 to Now | 3.4% | 9.2% | 15.6% |
| Pop. 1990 to Now | 33.6% | 20.1% | 30.8% |
| space4 | | | |
| Population Density | 41.9 | 101.1 | 93.4 |
| Land Area | 25.4 | 44.3 | 3,531,905.4 |
| Water Area | 6.3 | 3.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Rome, ME | Vassalboro, ME | United States |
| Age 0 to 4 | 4.6% | 5.0% | 5.9% |
| Age 5 to 9 | 3.9% | 3.9% | 6.1% |
| Age 10 to 14 | 8.5% | 6.1% | 6.6% |
| Age 15 to 17 | 2.9% | 3.6% | 3.9% |
| Age 18 to 20 | 1.3% | 1.9% | 4.0% |
| Age 21 to 24 | 2.1% | 2.5% | 5.2% |
| Age 25 to 34 | 8.6% | 10.0% | 13.8% |
| Age 35 to 44 | 10.1% | 9.2% | 12.9% |
| Age 45 to 54 | 9.0% | 11.2% | 12.6% |
| Age 55 to 59 | 10.2% | 7.8% | 6.7% |
| Age 60 to 64 | 10.8% | 15.1% | 6.3% |
| Age 65 to 74 | 21.9% | 17.6% | 9.6% |
| Age 75 to 84 | 4.9% | 3.9% | 4.5% |
| Age 85 and over | 1.2% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Rome, ME | Vassalboro, ME | United States |
| White | 95.4% | 94.1% | 59.4% |
| Black | 0.7% | 0.0% | 12.2% |
| Asian | 0.3% | 0.2% | 5.6% |
| Native American | 0.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.6% | 0.3% | 0.4% |
| Two or More Races | 1.4% | 3.0% | 3.2% |
| Hispanic | 0.0% | 2.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Rome, ME | Vassalboro, ME | United States |
| Married Population | 61.4% | 56.9% | 49.8% |
| Currently Married | 61.4% | 56.0% | 48.0% |
| Married but Separated | 0.0% | 0.9% | 1.8% |
| Single Population | 38.6% | 43.1% | 50.2% |
| Never Married | 13.5% | 23.2% | 33.8% |
| Divorced | 18.2% | 16.7% | 10.8% |
| Widowed | 6.9% | 3.2% | 5.6% |
| space5 | | | |
| Household Size | 2.10 | 2.28 | 2.60 |
| Households | 501 | 1,963 | 124,010,992 |
| Family Households | 292 | 1,388 | 80,755,759 |
| Married couple, w/children | 29.1% | 15.6% | 30.5% |
| Married couple, no children | 59.9% | 60.7% | 42.9% |
| Non Family Households | 209 | 575 | 43,255,233 |
| Single householder, w/children | 11.0% | 13.7% | 15.8% |
| Single householder, no children | 0.0% | 10.0% | 10.8% |