| | Oak Bluffs, MA | Unalaska, AK | United States |
| Population | 5,284 | 4,339 | 329,725,481 |
| Female Population | 53.2% | 45.4% | 50.5% |
| Male Population | 46.8% | 54.6% | 49.5% |
| Median Age | 40.4 | 39.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,532 | 4,371 | 309,327,143 |
| Population - 2000 | 3,713 | 4,283 | 285,036,114 |
| Population - 1990 | 2,804 | 3,089 | 251,960,433 |
| Pop. 2000 to Now | 26.5% | 4.4% | 15.6% |
| Pop. 1990 to Now | 67.5% | 44.8% | 30.8% |
| space4 | | | |
| Population Density | 723.0 | 42.1 | 93.4 |
| Land Area | 7.3 | 103.1 | 3,531,905.4 |
| Water Area | 18.6 | 107.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Oak Bluffs, MA | Unalaska, AK | United States |
| Age 0 to 4 | 6.5% | 2.9% | 5.9% |
| Age 5 to 9 | 4.6% | 4.1% | 6.1% |
| Age 10 to 14 | 10.1% | 2.5% | 6.6% |
| Age 15 to 17 | 4.4% | 2.0% | 3.9% |
| Age 18 to 20 | 1.2% | 3.7% | 4.0% |
| Age 21 to 24 | 2.4% | 11.5% | 5.2% |
| Age 25 to 34 | 12.6% | 17.0% | 13.8% |
| Age 35 to 44 | 13.9% | 15.5% | 12.9% |
| Age 45 to 54 | 12.1% | 21.7% | 12.6% |
| Age 55 to 59 | 9.1% | 7.9% | 6.7% |
| Age 60 to 64 | 2.7% | 5.2% | 6.3% |
| Age 65 to 74 | 13.0% | 4.8% | 9.6% |
| Age 75 to 84 | 6.2% | 1.2% | 4.5% |
| Age 85 and over | 1.2% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Oak Bluffs, MA | Unalaska, AK | United States |
| White | 83.4% | 21.2% | 59.4% |
| Black | 4.5% | 3.3% | 12.2% |
| Asian | 0.0% | 54.2% | 5.6% |
| Native American | 0.0% | 2.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 2.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 11.5% | 6.6% | 3.2% |
| Hispanic | 0.7% | 10.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Oak Bluffs, MA | Unalaska, AK | United States |
| Married Population | 52.8% | 52.2% | 49.8% |
| Currently Married | 52.8% | 47.5% | 48.0% |
| Married but Separated | 0.0% | 4.8% | 1.8% |
| Single Population | 47.2% | 47.8% | 50.2% |
| Never Married | 30.0% | 34.3% | 33.8% |
| Divorced | 14.6% | 9.7% | 10.8% |
| Widowed | 2.6% | 3.8% | 5.6% |
| space5 | | | |
| Household Size | 2.94 | 4.27 | 2.60 |
| Households | 1,766 | 811 | 124,010,992 |
| Family Households | 1,001 | 458 | 80,755,759 |
| Married couple, w/children | 39.6% | 43.9% | 30.5% |
| Married couple, no children | 45.6% | 39.5% | 42.9% |
| Non Family Households | 765 | 353 | 43,255,233 |
| Single householder, w/children | 11.2% | 14.2% | 15.8% |
| Single householder, no children | 3.7% | 2.4% | 10.8% |