| | Hollis, ME | Eustis, ME | United States |
| Population | 4,707 | 482 | 329,725,481 |
| Female Population | 50.1% | 46.5% | 50.5% |
| Male Population | 49.9% | 53.5% | 49.5% |
| Median Age | 50.4 | 40.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,285 | 617 | 309,327,143 |
| Population - 2000 | 4,114 | 685 | 285,036,114 |
| Population - 1990 | 3,573 | 616 | 251,960,433 |
| Pop. 2000 to Now | 16.8% | -9.9% | 15.6% |
| Pop. 1990 to Now | 34.5% | 0.2% | 30.8% |
| space4 | | | |
| Population Density | 147.0 | 12.3 | 93.4 |
| Land Area | 32.0 | 39.1 | 3,531,905.4 |
| Water Area | 1.0 | 2.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hollis, ME | Eustis, ME | United States |
| Age 0 to 4 | 4.9% | 4.4% | 5.9% |
| Age 5 to 9 | 2.5% | 9.3% | 6.1% |
| Age 10 to 14 | 4.5% | 3.1% | 6.6% |
| Age 15 to 17 | 3.7% | 7.5% | 3.9% |
| Age 18 to 20 | 3.3% | 11.8% | 4.0% |
| Age 21 to 24 | 1.8% | 0.6% | 5.2% |
| Age 25 to 34 | 4.8% | 1.7% | 13.8% |
| Age 35 to 44 | 13.1% | 17.6% | 12.9% |
| Age 45 to 54 | 24.2% | 14.5% | 12.6% |
| Age 55 to 59 | 10.6% | 6.2% | 6.7% |
| Age 60 to 64 | 9.3% | 1.5% | 6.3% |
| Age 65 to 74 | 12.0% | 13.1% | 9.6% |
| Age 75 to 84 | 3.9% | 5.4% | 4.5% |
| Age 85 and over | 1.4% | 3.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hollis, ME | Eustis, ME | United States |
| White | 96.8% | 98.5% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.5% | 0.0% | 0.4% |
| Two or More Races | 1.7% | 1.5% | 3.2% |
| Hispanic | 0.7% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hollis, ME | Eustis, ME | United States |
| Married Population | 57.8% | 39.7% | 49.8% |
| Currently Married | 57.8% | 36.7% | 48.0% |
| Married but Separated | 0.0% | 3.0% | 1.8% |
| Single Population | 42.2% | 60.3% | 50.2% |
| Never Married | 26.4% | 27.2% | 33.8% |
| Divorced | 12.9% | 22.7% | 10.8% |
| Widowed | 2.9% | 10.5% | 5.6% |
| space5 | | | |
| Household Size | 2.49 | 1.87 | 2.60 |
| Households | 1,882 | 258 | 124,010,992 |
| Family Households | 1,402 | 114 | 80,755,759 |
| Married couple, w/children | 25.7% | 21.1% | 30.5% |
| Married couple, no children | 55.6% | 36.0% | 42.9% |
| Non Family Households | 480 | 144 | 43,255,233 |
| Single householder, w/children | 5.9% | 43.0% | 15.8% |
| Single householder, no children | 12.8% | 0.0% | 10.8% |