Southwest Harbor is a town in Hancock County, Maine, United States. Located on Mount Desert Island, the population was 1,764 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 22.69 square miles (58.77 km), of which 13.51 square miles (34.99 km) is land and 9.18 square miles (23.78 km) is water.
As of the census of 2010, there were 1,764 people, 835 households, and 483 families residing in the town. The population density was 130.6 inhabitants per square mile (50.4/km). There were 1,484 housing units at an average density of 109.8 per square mile (42.4/km). The racial makeup of the town was 97.3% White, 0.2% African American, 0.5% Native American, 0.3% Asian, 0.3% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 1.0% of the population.
There were 835 households of which 24.2% had children under the age of 18 living with them, 44.2% were married couples living together, 10.1% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 42.2% were non-families. 35.0% of all households were made up of individuals and 15.7% had someone living alone who was 65 years of age or older. The average household size was 2.10 and the average family size was 2.69.
The median age in the town was 47.2 years. 19.4% of residents were under the age of 18; 7.1% were between the ages of 18 and 24; 20% were from 25 to 44; 31.3% were from 45 to 64; and 22.1% were 65 years of age or older. The gender makeup of the town was 47.0% male and 53.0% female.
As of the census of 2000, there were 1,966 people, 899 households, and 534 families residing in the town. The population density was 145.6 people per square mile (56.2/km²). There were 1,288 housing units at an average density of 95.4 per square mile (36.8/km²). The racial makeup of the town was 98.37% White, 0.31% African American, 0.15% Native American, 0.15% Asian, 0.31% from other races, and 0.71% from two or more races. Hispanic or Latino of any race were 0.56% of the population.
There were 899 households out of which 24.9% had children under the age of 18 living with them, 47.9% were married couples living together, 8.3% had a female householder with no husband present, and 40.5% were non-families. Of all households 34.0% were made up of individuals and 16.9% had someone living alone who was 65 years of age or older. The average household size was 2.15 and the average family size was 2.76.
In the town, the population was spread out with 20.7% under the age of 18, 7.4% from 18 to 24, 26.2% from 25 to 44, 26.0% from 45 to 64, and 19.6% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 90.9 males. For every 100 females age 18 and over, there were 90.7 males.
The median income for a household in the town was $36,555, and the median income for a family was $50,000. Males had a median income of $29,792 versus $24,044 for females. The per capita income for the town was $21,509. About 8.8% of families and 12.0% of the population were below the poverty line, including 17.3% of those under age 18 and 6.3% of those age 65 or over.