| | Mount Desert, ME | Homer, AK | United States |
| Population | 1,771 | 5,531 | 329,725,481 |
| Female Population | 53.6% | 48.7% | 50.5% |
| Male Population | 46.4% | 51.3% | 49.5% |
| Median Age | 54.6 | 39.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,054 | 5,047 | 309,327,143 |
| Population - 2000 | 2,109 | 3,946 | 285,036,114 |
| Population - 1990 | 1,899 | 3,660 | 251,960,433 |
| Pop. 2000 to Now | 0.2% | 52.9% | 15.6% |
| Pop. 1990 to Now | 11.3% | 64.9% | 30.8% |
| space4 | | | |
| Population Density | 48.0 | 401.2 | 93.4 |
| Land Area | 36.9 | 13.8 | 3,531,905.4 |
| Water Area | 18.0 | 11.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Mount Desert, ME | Homer, AK | United States |
| Age 0 to 4 | 2.5% | 6.2% | 5.9% |
| Age 5 to 9 | 3.6% | 5.2% | 6.1% |
| Age 10 to 14 | 2.5% | 6.1% | 6.6% |
| Age 15 to 17 | 4.0% | 2.8% | 3.9% |
| Age 18 to 20 | 1.1% | 3.7% | 4.0% |
| Age 21 to 24 | 7.8% | 3.7% | 5.2% |
| Age 25 to 34 | 9.9% | 14.8% | 13.8% |
| Age 35 to 44 | 8.4% | 12.9% | 12.9% |
| Age 45 to 54 | 11.0% | 9.1% | 12.6% |
| Age 55 to 59 | 12.8% | 6.9% | 6.7% |
| Age 60 to 64 | 10.4% | 8.3% | 6.3% |
| Age 65 to 74 | 15.7% | 14.1% | 9.6% |
| Age 75 to 84 | 8.2% | 4.1% | 4.5% |
| Age 85 and over | 2.1% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Mount Desert, ME | Homer, AK | United States |
| White | 97.2% | 80.3% | 59.4% |
| Black | 1.4% | 0.3% | 12.2% |
| Asian | 0.4% | 1.7% | 5.6% |
| Native American | 0.0% | 7.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 1.0% | 0.1% | 0.4% |
| Two or More Races | 0.0% | 5.4% | 3.2% |
| Hispanic | 0.1% | 5.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Mount Desert, ME | Homer, AK | United States |
| Married Population | 58.7% | 48.4% | 49.8% |
| Currently Married | 56.9% | 47.5% | 48.0% |
| Married but Separated | 1.7% | 0.9% | 1.8% |
| Single Population | 41.3% | 51.6% | 50.2% |
| Never Married | 28.0% | 31.4% | 33.8% |
| Divorced | 9.5% | 14.5% | 10.8% |
| Widowed | 3.8% | 5.7% | 5.6% |
| space5 | | | |
| Household Size | 2.15 | 2.34 | 2.60 |
| Households | 820 | 2,307 | 124,010,992 |
| Family Households | 462 | 1,298 | 80,755,759 |
| Married couple, w/children | 22.1% | 21.7% | 30.5% |
| Married couple, no children | 71.2% | 55.5% | 42.9% |
| Non Family Households | 358 | 1,009 | 43,255,233 |
| Single householder, w/children | 0.6% | 17.3% | 15.8% |
| Single householder, no children | 6.1% | 5.4% | 10.8% |